Hartman, Roland Clarence, 1906- Keeping chickens in cages; a description of the outdoor individual cage system of poultry management as developed mainly in southern California. - [2d print. and revision] - Redlands, Calif. [c1951] - 236 p. illus. 21 cm. LCCN: agr52000007 Subjects--Topical Terms: Poultry--Housing.Poultry. LC Class. No.: SF487 / .H313 1951 Dewey Class. No.: 636.50831