TY - BOOK ED - Unesco. TI - A Systems approach to teaching and learning procedures: a guide for educators in developing countries SN - 9231012428 AV - LC2607 .S98 U1 - 371.1/02 PY - 1975/// CY - Paris PB - Unesco Press KW - Education KW - Developing countries KW - Teaching KW - System analysis N1 - Study sponsored by Unesco; Bibliography: p. [143]-144 ER -