01058nam a22002772a 4500 49844 BD-RJUL 20211209054734.0 160822s1949 xx 000 0 eng c BD-RJUL 49964 CSU CSU EQO eng eng 371.33 MCA 1949 McKown, Harry C. (Harry Charles), 1892-1963. 149387 Audio-visual aids to instruction / by Harry C. McKown...and Alvin B. Roberts.. 2d ed. New York and : London : McGraw-Hill book company, inc, 1949 xvi, 608 p. : ill. ; 24cm McGraw-Hill series in education, Harold Benjamin, consulting editor "Selected references" at end of each chapter except chapter III. "Sources of materials and equipment": p.579-595 Audio-visual education 134531 Roberts, Alvin 149388 McGraw-Hill series in education, Harold Benjamin, consulting editor 149389 ddc BK 49844 49844 0 0 ddc 0 0 NFIC RUCL RUCL Stack 1959-01-05 Magrohill Book 5.85 0 371.33 MCA 1949 2016-08-22 00:00:00 C-2 2016-08-22 BK 0 0 ddc 0 0 NFIC RUCL RUCL Stack 1959-01-05 Magrohill Book 5.85 0 371.33 MCA 1949 2016-08-22 00:00:00 C-3 2016-08-22 BK