000 00491nam a22001817a 4500
003 OSt
005 20220913142857.0
008 180411b xxu||||| |||| 00| 0 eng d
040 _aLB-BrCRDP
082 _a371.39442 N277p
110 _aNational centre for programmed learning
245 _aProgrammed Learning
260 _aGreat britain
_bWatford Printers Ltd.
_c1966
300 _a68p
_c20cm
650 _aProgrammed instruction
650 _aEnseignement programmé
942 _2ddc
_cBK
999 _c19038
_d19038