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  1. Bignoniaceae of tropical North America [by] Louis O. Williams.
    By: Williams, Louis Otho,
    Publication info: Chicago, Ill :Field Museum of Natural History,1973.
    Contributed by: University of Illinois Urbana Champaign
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  2. Eplingia, a new genus of the Labiatae from Mexico [by] Louis O. Williams.
    By: Williams, Louis Otho,
    Publication info: Chicago, Ill. :Field Museum of Natural History,1973.
    Contributed by: University of Illinois Urbana Champaign
    View Book
  3. Flora of Guatemala / by Paul C. Standley and Louis O. Williams.
    By: Standley, Paul Carpenter, - Williams, Louis Otho,
    Publication info: Chicago, ill. :Field Museum of Natural History,1975.
    Contributed by: University of Illinois Urbana Champaign
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  4. Flora of Guatemala / Dorothy L. Nash, Louis O. Williams ; genera contributed by Kenneth M. Becker ... [et al.].
    By: Nash, Dorothy L. - Williams, Louis Otho,
    Publication info: Chicago, Ill. :Field Museum of Natural History,1976.
    Contributed by: University of Illinois Urbana Champaign
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  5. Flora of Guatemala / Paul C. Standley and Louis O. Williams.
    By: Standley, Paul Carpenter, - Williams, Louis Otho,
    Publication info: Chicago, Ill. :Field Museum of Natural History,1970.
    Contributed by: University of Illinois Urbana Champaign
    View Book
  6. Flora of Guatemala / Paul C. Standley and Louis O. Williams.
    By: Standley, Paul Carpenter, - Williams, Louis Otho,
    Publication info: Chicago, Ill. :Chicago Natural History Museum,1962.
    Contributed by: University of Illinois Urbana Champaign
    View Book
  7. Flora of Guatemala / Paul C. Standley and Louis O. Williams.
    By: Standley, Paul Carpenter, - Lundell, Cyrus Longworth, - Williams, Louis Otho,
    Publication info: Chicago, Ill. :Chicago Natural History Museum,1966.
    Contributed by: University of Illinois Urbana Champaign
    View Book
  8. Flora of Guatemala / Paul C. Standley and Louis O. Williams.
    By: Standley, Paul Carpenter, - Gibson, Dorothy N. - Williams, Louis Otho,
    Publication info: Chicago, Ill. :Field Museum of Natural History,1969.
    Contributed by: University of Illinois Urbana Champaign
    View Book
  9. Flora of Guatemala / Paul C. Standley and Louis O. Williams.
    By: Standley, Paul Carpenter, - Williams, Louis Otho,
    Publication info: Chicago, Ill. :Field Museum of Natural History,1973.
    Contributed by: University of Illinois Urbana Champaign
    View Book
  10. Flora of Guatemala / Paul C. Standley and Louis O. Williams.
    By: Standley, Paul Carpenter, - Williams, Louis Otho,
    Publication info: Chicago, Ill. :Field Museum of Natural History,1967.
    Contributed by: University of Illinois Urbana Champaign
    View Book
  11. Flora of Guatemala / Paul C. Standley and Louis O. Williams.
    By: Standley, Paul Carpenter, - Williams, Louis Otho,
    Publication info: Chicago, Ill. :Chicago Natural History Museum,1963.
    Contributed by: University of Illinois Urbana Champaign
    View Book
  12. Flora of Guatemala / Paul C. Standley and Louis O. Williams.
    By: Standley, Paul Carpenter, - Williams, Louis Otho,
    Publication info: Chicago, Ill. :Chicago Natural History Museum,1961.
    Contributed by: University of Illinois Urbana Champaign
    View Book
  13. Flora of Guatemala / Paul C. Standley, Louis O. Williams, Dorothy Nash Gibson.
    By: Standley, Paul Carpenter, - Nash, Dorothy L. - Williams, Louis Otho,
    Publication info: Chicago, Ill. :Field Museum of Natural History,1974.
    Contributed by: University of Illinois Urbana Champaign
    View Book
  14. Hoffmannias from Mexico and Central America [by] Louis O. Williams.
    By: Williams, Louis Otho,
    Publication info: Chicago, Ill. :Field Museum of Natural History,1973.
    Contributed by: University of Illinois Urbana Champaign
    View Book
  15. Homage to Standley; papers in honor of Paul C. Standley. Edited by Louis O. Williams.
    By: Chicago Natural History Museum. - Williams, Louis Otho,
    Publication info: Chicago,1963
    Contributed by: Field Museum Library
    BHL Collections: Field Museum Library
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  16. The Juglandaceae of Guatemala / Louis O. Williams and Antonio Molina R.
    By: Williams, Louis Otho, - Molina R, Antonio,
    Publication info: Chicago, Ill. :Field Museum of Natural History,1970.
    Contributed by: University of Illinois Urbana Champaign
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  17. An overlooked genus of the Scrophulariaceae / Louis O. Williams.
    By: Williams, Louis Otho,
    Publication info: Chicago, Ill. :Field Museum of Natural History,1970.
    Contributed by: University of Illinois Urbana Champaign
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  18. Tropical American plants, II / Louis O. Williams.
    By: Williams, Louis Otho, - Chicago Natural History Museum.
    Publication info: Chicago, Ill. :Chicago Natural History Museum,1961.
    Contributed by: University of Illinois Urbana Champaign
    View Book
  19. Tropical American plants, III / Louis O. Williams.
    By: Williams, Louis Otho, - Chicago Natural History Museum.
    Publication info: Chicago, Ill. :Chicago Natural History Museum,[1962]
    Contributed by: University of Illinois Urbana Champaign
    View Book
  20. Tropical American plants, IX / Louis O. Williams.
    By: Williams, Louis Otho, - Field Museum of Natural History.
    Publication info: Chicago, Ill. :Field Museum of Natural History,1968.
    Contributed by: University of Illinois Urbana Champaign
    View Book
  21. Tropical American plants, V / Louis O. Williams.
    By: Williams, Louis Otho, - Chicago Natural History Museum.
    Publication info: Chicago, Ill. :Chicago Natural History Museum,[1963]
    Contributed by: University of Illinois Urbana Champaign
    View Book
  22. Tropical American plants, VI / Louis O. Williams.
    By: Williams, Louis Otho, - Chicago Natural History Museum.
    Publication info: Chicago, Ill. :Chicago Natural History Museum,1964.
    Contributed by: University of Illinois Urbana Champaign
    View Book
  23. Tropical American plants, VII / Louis O. Williams.
    By: Williams, Louis Otho, - Chicago Natural History Museum.
    Publication info: Chicago, Ill. :Chicago Natural History Museum,1965.
    Contributed by: University of Illinois Urbana Champaign
    View Book
  24. Tropical American plants, VIII / Louis O. Williams.
    By: Williams, Louis Otho,
    Publication info: Chicago, Ill. :Field Museum of Natural History,1967.
    Contributed by: University of Illinois Urbana Champaign
    View Book
  25. Tropical American plants, X / Louis O. Williams.
    By: Williams, Louis Otho,
    Publication info: Chicago, Ill. :Field Museum of Natural History,[1968]
    Contributed by: University of Illinois Urbana Champaign
    View Book
  26. Tropical American plants, XI / Louis O. Williams.
    By: Williams, Louis Otho,
    Publication info: Chicago, Ill. :Field Museum of Natural History,1970.
    Contributed by: University of Illinois Urbana Champaign
    View Book
  27. Tropical American plants, XII / Louis O. Williams.
    By: Williams, Louis Otho,
    Publication info: Chicago, Ill. :Field Museum of Natural History,[1972]
    Contributed by: University of Illinois Urbana Champaign
    View Book
  28. Tropical American plants, XVII / Louis O. Williams.
    By: Williams, Louis Otho,
    Publication info: [Chicago] :Chicago Natural History Museum,1975.
    Contributed by: University of Illinois Urbana Champaign
    View Book