Lutz Frank Eugene

How To Collect And Preserve Insects

In The Steps Of The Great American Entomologist, Frank Eugene Lutz

Altitude In Colorado And Geographical Distribution

Field Book Of Insects, With Special Reference To Those Of Northeastern United States, Aiming To Answer Common Questions

Field Book Of Insects

Field Book Of Insects

Nature Trails

Notes On The Distribution And Bibliography Of North American Bees Of The Families, Apidae, Meliponidae, Bombidae, Euglossidae, And Anthophoridae