000
00310nam a2200133Ia 4500
700
_a
Baker, Robert L.
100
_a
Baker, Robert L.
942
_c
BK
654
_a
245
_a
Instructional product research
260
_a
New York
_b
American Book Company
_c
1972
082
_a
370.78
300
_a
xxviii,314
999
_c
403659
_d
403659
041
_a
eng