Yazar
leland ossian howard
29 cilt bulundu.
Samuel Hubbard Scudder, William Morris Davis, C. W. Woodworth, L. O. Howard, Charles V. Riley, Samuel Wendell Williston · The author
1267 sayfa · 1889
Butterflies / Papillons / Speciation
L. O. Howard · The Macmillian Company
333 sayfa · 1933
Biography / Control / Entomologists / Injurious and beneficial Insects / Insect pests
L. O. Howard · U.S. Dept. of Agriculture, Bureau of Entomology
Sayfa sayısı yok · 1902
Hydrocyanic acid gas / Pesticides / Insect pests / Control
L. O. Howard, Harrison Gray Dyar, Frederick Knab · Creative Media Partners, LLC
562 sayfa · 2015
Kategori yok
L. O. Howard · G.P.O.
29 sayfa · 1895
Pesticides / Injurious and beneficial Insects / Law and legislation / Insect pests
L. O. Howard · U.S. Dept. of Agriculture, Bureau of Entomology
312 sayfa · 1911
Gypsy moth / Biological control / Parasites / Browntail moth
L. O. Howard · Stokes
312 sayfa · 1911
Control / Flies / Flies as carriers of contagion / Flies as carriers of disease / Diptera
L. O. Howard · U.S. Dept. of Agriculture, Division of Entomology
131 sayfa · 1896
Insect pests / Household pests / Household Insects
L. O. Howard · U.S. Dept. of Agriculture, Division of Entomology
93 sayfa · 1897
Insect pests / Entomology
Joseph A. Le Prince, A. J. Orenstein, L. O. Howard · Franklin Classics
407 sayfa · 1916
Epidemiology / Yellow Fever / Mosquito Control / Yellow fever
L. O. Howard · Yayınevi bilinmiyor
33 sayfa · 1899
Insects, Injurious and beneficial. [from old catalog]
L. O. Howard · Govt. print. off.
Sayfa sayısı yok · 1905
Geographical distribution / Mosquitoes / Yellow fever