TY - BOOK AU - Fernau, C. N. TI - The use of photographs in workers' education: An instructional aid for workers' educators and trade unionists SN - 9221020754 (pbk.) : AV - TR816 .F47 U1 - 770/.28 19 PY - 1979/// CY - Geneva PB - International Labour Office KW - Photography in education KW - Employees KW - Training of ER -