Three Insect Enemies Of Shade Trees, Volumes 76-100
La menace des insectes
La menance des insectes
Apiculture
La menace des insectes
Correspondencia de L. O. Howard Con Ignacio Bolívar
Some Facts about Malaria, by L. O. Howard,...
Biographical Memoir of Edward Sylvester Morse, 1838-1925
The Mosquitoes of North and Central America and the West Indies
The Importation Into the United States of the Parasites of the Gipsy Moth and the Brown-tail Moth
New Genera and Species of Aphelininæ with a Revised Table of Genera
Introduction
Insects Affecting the Cotton Plant
The Psychic Life of Insects ... Translated by L.O. Howard, Etc
The Spread of Land Species by the Agency of Man
The Use of Steam Apparatus for Spraying. By L. O. Howard. Reprinted from the Yearbook of the Department of Agriculture for 1896
Experiment Station Work, XXXVIII
Miscellaneous Papers