000
00304cam a22001097a 4500
008
180718b1972 xxu||||| |||| 00| 0 eng d
082
_a
P14 Un3th
100
_a
Pocztar, Jerry
245
_a
Theory and Practice of programmed Instruction
_c
by Jerry Pocztar
260
_a
Paris
_b
UNESCO
_c
1972
300
_a
179p.
999
_c
494540
_d
494540