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- Glaser, Linda C.
- Glaser, Michael
- Glaser, Otto
- Glaser, Paul H.
- Glaser, Rudolf
- Glaser, Rudolf William, 1888-1947
- Glaser, Theodor
- Glasewald, Ephraim Wolfgang.
- Glasfurd, Alexander Inglis Robertson, 1870-1942
- Glasfurd, Charles
- Glasfurd, John
- Glasgow and Andersonian Natural History and Microscopical Society.
- Glasgow Archaeological Society. 1882-
- Glasgow Botanic Gardens.
- Glasgow Medico-Chirurgical Society.
- Glasgow Natural History Society.
- Glasgow Society of Field Naturalists.
- Glasgow, Hugh
- Glasgow, Robert Douglas, 1879-1964
- Glasier, James R.N.
- Glasl, Carl.
- Glasner, Robert.
- Glasrud, Ray D.
- Glass City Floral Gardens,
- Glass, A. D. M.
- Glass, Alexander
- Glass, Bentley, 1906-
- Glass, Bryan P.
- Glass, Catherine E.
- Glass, Charles.
- Glass, Elena J.
- Glass, Gary E.
- Glass, Gregory E
- Glass, Heman Seed Co.
- Glass, Heman.
- Glass, Jewell J.
- Glass, Philip O.
- Glass, Tom W.
- Glass, Trevor
- Glassbach, Carl Christian, 1751-
- Glassbach, Christian Benjamin, 1724-1779
- Glassberg, Jeffrey
- Glassburn, Tracy A
- Glasscock, Lyman D.
- Glasse, Hannah, 1708-1770
- Glässel, Kurt
- Glassell, Steve A
- Glasser, Sonja
- Glasser, Stephen P.
- Glassford, Donald Kenneth
- Glassman, Sidney F.
- Glassman, Sydney I.
- Glassmire, Andrea
- Glasson, Edwin J.,
- Glasson, Giles
- Glasson, J L
- Glasson, W. A.
- Glasstetter, Michèle 1957-
- Glastonbury Gardens.
- Glatfelter, Noah Miller, 1837-1911
- Glattstein, Judy
- Glatz, Richard V
- Glatzel, A.
- Glauber, Johann Rudolf, 1604-1670
- Glaubrecht, Matthias
- Glauert, Ludwig, 1879-1963
- Glaus-Most, Luzia 1936-
- Glavendekić, Milka M., 1960-
- Glavich, Doug
- Glavnoe Upravlenīe Zemleustroĭstva I Zemledelīi︠a︡. Departament Zemledelīi︠a︡.
- Glavnyĭ botanicheskiĭ sad (Qazaq SSR ghylym akademii︠a︡sy)
- Glavnyĭ botanicheskiĭ sad R.S.F.S.R. Gerbariĭ.
- Glaw, Frank
- Glawe, Dean A.
- Glaze, Norman Cline, 1934-
- Glazebrook, Richard, Sir, 1854-1935
- Glazer, Robert A
- Glazier, Willard W., 1841-1905
- Glaziou, A. F. M. (Auguste Franois Marie), 1828-1906
- Glbbs, Philip
- Gleadall, Ian G
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- Gleadow, F
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- Gleason, Henry A. (Henry Allan), 1882-1975
- Gleason, Herbert Wendell, 1855-1937
- Gleason, Jeffrey S.
- Gleason, Larry N
- Gleason, Mary M
- Gleason, Oliver H.
- Gleason, Oliver W.
- Gleason, Oscar R. (Oscar Rudolph), 1856-
- Gleason, R L
- Gleason, Review By: H A
- Glebewood Gardens.
- Glebov, I. T. (Ivan Timofeevich), 1806-1884
- Glecklers Seedmen (Nursery),
- Gleditsch, firma (Leipzig)
- Gleditsch, Johann Gottlieb, 1714-1786
- Gleditsch, Johann Ludwig, 1663-1741
- Gleeson, Dianne
- Gleeson, Patrick V
- Gleeson, Richard A.
- Gleichen-Russwurm, Wilhelm Friedrich, Freiherr von, 1717-1783
- Gleiser, Raquel M.
- Gleisner, Gudula
- Gleizal, Claude, 1761-1833
- Glembocki, Nora G
- Glen Brothers.
- Glen Ellyn Nurseries.
- Glen Mary Fish Farm
- Glen Moore Nursery.
- Glen Road Iris Gardens.
- Glen Rock Nurseries.
- Glen Saint Mary Nurseries Company.
- Glen St. Mary Nurseries.
- Glen Terrace Nurseries.
- Glen Valley Fruit Farm.
- Glen View Nurseries.
- Glen, R A
- Glen, Edith H
- Glen, H.F.
- Glen, Liz
- Glen, Melissa
- Glen, R A
- Glen, Robert
- Glen, W. M.
- Glencon, Maurice
- Glencove Strawberry Nurseries.
- Glencross, Deborah
- Glendale Crest Nursery.
- Glendale Distributing Company.
- Glendale Farm & Garden,
- Glendale Flower and Water Gardens.
- Glendale Nursery Co.
- Glendale Rose Garden,
- Glenday, V.
- Glenden Dahlia Gardens.
- Glendening, George E. (George Elmo), 1912-
- Glendenning, R. (Reginald)
- Glendinning, Robert.
- Glenfin, pseud.
- Glenheim Farm.
- Glenie, Robin C.
- Glenister, Brian Frederick 1928-2012
- Glenister, Brian Frederick 1928-2012
- Glenn Cliff Nursery.
- Glenn, Ashley
- Glenn, C. L.
- Glenn, Elizabeth M.
- Glenn, James L.
- Glenn, James.
- Glenn, Leonidas Chalmers, 1871-
- Glenn, Marian G.
- Glenn, Murray O., 1981
- Glenn, Pressley A. 1867-
- Glenn, Susan S.
- Glenn, Thomas Haigh.
- Glenn, Vanessa
- Glenn, Walter Hill.
- Glenn, Walter Lewis.
- Glenn, William Frank.
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- Glennie, E A
- Glenny, D S
- Glenny, David, 1955-
- Glenny, Fred H.
- Glenny, George, 1793-1874
- Glenview Farm,
- Glenview Nurseries.
- Glenwood Nurseries (Glenwood, FL)
- Glenwood Nurseries (Rochester, N.Y.)
- Glenwood Nursery (Rochester, N.Y.)
- Glenwood Nursery.
- Glenz, Rudolf
- Glew, Katherine A.
- Gley, E
- Gley, Marcel Eugène Émile.
- Gleye, Linda G.
- Glick Seed Farms,
- Glick Seed, Plant and Poultry Farms.
- Glick, David, 1908-
- Glick, I. N.
- Glick, Jayson I.
- Glick, Perry A
- Glicken, Harry
- Glickman, B. W.
- Glickman, Robert M
- Glickman, Stephen E. 1923-2020
- Glick's Seed Farms.
- Glick's Seed, Plant and Poultry Farms.
- Glidden, Derek
- Glieme Seed Importers.
- Gliessman, Stephen R
- Glijm, C.
- Glikman, Jenny Anne
- Glimcher, Melvin J
- Glime, Janice M.
- Glimpse-O-Glee Gardens,
- Glinderman, E. L.
- Glines, Margaretta Victoria.
- Glinski, Richard L. 1950-
- Glitho, Isabelle Adolé
- Glitz, Christian Theodor, 1819-1889
- Glitzner, Irene
- Gloag, M. R.
- Global Environmental Monitoring System.
- Globe Nurseries.
- Globensky, C. A. M. (Charles Auguste Maximilien), 1830-1906
- Globensky, Emile-Auguste
- Glock, Luiz
- Glock, Waldo S. (Waldo Sumner), 1897-1990
- Glocker, Ernst Friedrich 1793-1858
- Glodek, Garrett S.
- Gloe, C S
- Gloeden, V
- Gloede's Conservatories.
- Glöer, Peter
- Gloerfelt-Trap, Thomas
- Gloger, Constantin Wilhelm Lambert, 1803-1859
- Gloger, Hellmut
- Glogowski, Mary Ann
- Glomy, Jean-Baptiste.
- Glon, Mael G.
- Gloor, Daniel
- Gloor, H
- Gloor, Regula Dorothea 1934-
- Gloor, Sandra
- Glooschenko, Walter A.
- Glor, Richard E
- Gloria-Soria, Andrea
- Glories, Y
- Glori-Glad Gardens.
- Glorioso, Michael J.
- Glos, Julian
- Glossary
- Glossop, Bertram Robert Mitford.
- Gloster, Oliver
- Glotov, Andrey S.
- Glover, Adrian G.
- Glover, Ashleigh
- Glover, Brian
- Glover, Charles John Melville
- Glover, Emily A.
- Glover, Fred A
- Glover, H. Clay.
- Glover, J B
- Glover, J F
- Glover, J. W. Thomson