Note 3 — III HOW TRAINS HAVE BEEN USED IN CAMPAIGNING
Reading edition
Journal of Economic Entomology, Vol. 9, No. 1, 1916, George A. Dean, Entomologist, Kansas State Agricultural Experiment Station.
Reading edition
Journal of Economic Entomology, Vol. 9, No. 1, 1916, George A. Dean, Entomologist, Kansas State Agricultural Experiment Station.