Genera insectorum - Wytsman, P. (Philogène) 1866 -1925 (L. Desmet-Verteneuil [etc.], 1902)

General index - Newstead, Robert (Simpkin, Marshall, Hamilton, Kent & co, 1899)

General index and supplement to the nine reports on the insects of Missouri - United States Entomological Commission. (Govt. Print. Off, 1881)

The geological magazine, or, Monthly journal of geology - Woodward, Henry, 1832 -1921 (Cambridge University Press, 1917)

Geschlecht und Geschlechter im Tierreiche - Meisenheimer, Johannes, 1873 -1933 (G. Fischer, 1921)

The grammar of entomology - Newman, Edward, 1801 -1876 (F. Westley and A.H. Davis, 1835)

Grasses of North America - Beal, W. J. (William James), 1833 -1924 (H. Holt and company, 1887)

Grasses of North America - Beal, W. J. (William James), 1833 -1924 (H. Holt, 1887)

Grasses of North America chapters on the physiology, composition, selection, improving and cultivation of grasses, management of grass lands, also chapters on clovers, injurious insects and fungi - Beal, W. J. (William James), 1833 -1924 (H. Holt, 1896)

Green manures and manuring in the tropics, including an account of the economic value of leguminosæ as sources of foodstuffs, vegetable oils, drugs, &c - Flattely, F. W. (Frederic William), 1888 - (J. Bale, Sons & Danielsson, Ltd, 1916)

Grønlands landarthropoder (Insecta et Arachnida Groenlandicæ) - Henriksen, Kai Ludvig, 1888 - (Bianco Lunos bogtrykkeri, 1917)

Grundzüge der Zoologie - Claus, Carl, 1835 -1899 (N. G. Elwert'sche, 1876)

Grundzüge der Zoologie. Zum Gebrauche an Universitäten und hoheren Lehranstalten sowie qum Selbststudium - Claus, Carl, 1835 -1899 (W.G Elevert'sche Verl, 1876)

Grundzüge der Zoologie. Zum gebrauche an universitäten und höheren lehranstalten sowie zum selbststudium - Claus, Carl, 1835 -1899 (N.G. Elwert, 1872)

Grundzüge der Zoologie. Zum wissenschaftlichen Gebrauche - Claus, Carl, 1835 -1899 (Elwert, 1882)

A guide to an arrangement of British insects : being a catalogue of all the named species hitherto discovered in Great Britain and Ireland - Curtis, John, 1791 -1862 (Printed for the author, published and sold by J. Pigot, 1837)

Guide to the insects of Connecticut - Wheeler, William Morton, 1865 -1937 (Printed for The State Geological and Natural History Survey, 1942)

A guide to the natural history of the Isle of Wight : a series of contributions by specialists relating to the various branches of natural history and kindred subjects - Morey, Frank, 1858 -1925 (The County Press, 1909)

Guide to the study of insects, and a treatise on those injurious and beneficial to crops: for the use of colleges, farm schools, and agriculturists - Packard, A. S. (Alpheus Spring), 1839 -1905 (Naturalist's book agency; [etc.,etc.], 1869)

Guide to the study of insects and a treatise on those injurious and beneficial to crops : for the use of colleges, farm-schools, and agriculturists - Packard, A. S. (Alpheus Spring), 1839 -1905 (H. Holt, 1878)

Guide to the study of insects : and a treatise on those injurious and beneficial to crops for the colleges, farm-schools, and agriculturists - Packard, A. S. (Alpheus Spring), 1839 -1905 (Henry Holt, 1889)

Guide to the study of insects, and a treatise on those injurious and beneficial to crops: for the use of colleges, farm-schools, and agriculturists - Packard, A. S. (Alpheus Spring), 1839 -1905 (Naturalist's agency, 1868)

Guide to the study of insects, and a treatise on those injurious and beneficial to crops: for the use of colleges, farm-schools, and agriculturists - Packard, A. S. (Alpheus Spring), 1839 -1905 (Naturalist's Agency; [etc., etc.], 1874)