Plankton assemblages of the Gambia River, West Africa, 1983-1984 - University of Michigan. Great Lakes; Marine Waters Center. (Great Lakes and Marine Waters Center, University of Michigan, 1985)

The plankton of the Illinois river, 1894-1899, with introductory notes upon the hydrography of the Illinois river and its basin - Kofoid, Charles A. (Charles Atwood), 1865 -1947 (1903)

Planktonkunde - Steuer, Adolf, 1871 - (B.G. Teubner, 1910)

Plant-animals; a study in symbiosis - Keeble, Frederick, 1870 -1952 (University Press, 1910)

Plant-animals; a study in symbiosis - Keeble, Frederick, 1870 -1952 (University Press, 1912)

The plant cell wall; a topical study of architecture, dynamics, comparative chemistry and technology in a biological system - Siegel, S. M. (Sanford Marvin), 1928 - (Pergamon Press, 1962)

Plant-geography upon a physiological basis - Balfour, Isaac Bayley, 1853 -1922 (Clarendon Press, 1903)

Plant growth substances - University of Wisconsin. (University of Wisconsin Press, 1951)

Plant life - American Plant Life Society. (American Plant Life Society, 1951)

Plant life and evolution (H. Holt, 1911)

Plant-life - Hall, Charles A. (Charles Albert), 1872 -1965 (A. & C. Black, 1915)

Plant life - Farmer, J. B. (John Bretland), 1865 -1944 (H. Holt, 1913)

Plant life - Farmer, J. B. (John Bretland), 1865 -1944 (H. Holt and company ; [etc., etc, 1913)

Plant-life - Hall, Charles A. (Charles Albert), 1872 -1965 (Black, 1915)

Plant morphogenesis - Sinnott, Edmund W. (Edmund Ware), 1888 -1958 (McGraw-Hill, 1960)

Plant morphology - Haupt, Arthur W. (Arthur Wing), 1894 - (McGraw-Hill, 1953)

The Plant world - Plant World Association. (Plant World Association [etc.], 1913)

The Plant world - Plant World Association. (Plant World Association [etc.], 1917)

Les plantes - Faideau, Ferdinand, 1862 -1930? (Larousse, 1922)

Plants of Iowa; a preliminary list of the native and introduced plants of the state, not under cultivation - Greene, Wesley. (Bishard brothers, printers, 1907)

The Popular science monthly - Harry Houdini Collection (Library of Congress) (Popular Science Pub. Co., etc, 1875)

The Popular science monthly - Harry Houdini Collection (Library of Congress) (Popular Science Pub. Co., etc, 1901)

The Popular science monthly - Harry Houdini Collection (Library of Congress) (Popular Science Pub. Co., etc, 1902)

Practical botany - Cavers, F. (Francis), 1876 -1936 (W.B. Clive, University Tutorial Press Ld, 1911)

Practical plant biology; a course of elementary lectures on the general morphology and physiology of plants - Dixon, Henry Horatio, 1869 - (Longmans, Green and co, 1922)

A preliminary report of the algae of the fresh waters of Connecticut - Webster, Lucia Washburn Hazen (Printed for the State Geological and Natural History Survey, 1908)

A preliminary report on the Protozoa of the fresh waters of Connecticut - Conn, H. W. (Herbert William), 1859 -1917 (Hartford press, The Case, Lockwood & Brainard company, 1905)