Books by John S. Perry
Encyclopedia of Global Environmental Change
Understanding our own planet
Understanding our own planet
Aeration of bulk-stored pea beans
The growth and reproduction of
The growth and reproduction of elephants in Uganda
Prison labor
Prison labor
Prison labor, with tables show
Prison labor, with tables showing the proportion of convict to citizen labor
An analysis of the vote on pri
An analysis of the vote on prison contract labor, polled November 6, 1883
Prison labor in New Jersey
Prison labor in New Jersey
Letter to Louis D. Pilsbury on
Letter to Louis D. Pilsbury on convict labor