Howard - Legislation Against Injurious Insects A Compilation of the L - X555z

Fletcher - Recent Additions to the List of Injurious Insects of Canada - X555z

Chittenden - Some Insects Injurious To Truck Crops The Semitropical A - X555z

Sempers - Injurious Insects and the Use of Insecticides microform - X555z

Perkins - On Some Of The Injurious Insects Of Vermont - New paperback - X555z

B. Smith - Our Insect Friends And Enemies The Relation Of Insects To - X555z

Weed - Injurious Insects - New paperback or softback - X555z

Howard - Recent Laws Against Injurious Insects in North America Toget - X555z