Fernau, C. N. The use of photographs in workers' education : An instructional aid for workers' educators and trade unionists / by C.N. Fernau. - 110 pages : illustrations ; 15 x 21 cm. ISBN: 9221020754 (pbk.) : 5.00F LCCN: 81106768 Nat. Bib. No.: Sw*** Subjects--Topical Terms: Photography in education.Employees--Training of. LC Class. No.: TR816 / .F47 Dewey Class. No.: 770/.28