000 00666 a2200193 4500
005 20250515081702.0
264 0 _c20100702
008 201007s 0 0 eng d
022 _a0036-8075
024 7 _a10.1126/science.149.3688.1047
_2doi
040 _aNLM
_beng
_cNLM
100 1 _aRoss, S E
245 0 0 _aProgrammed Instruction.
_h[electronic resource]
260 _bScience (New York, N.Y.)
_cSep 1965
300 _a1047 p.
_bdigital
500 _aPublication Type: Journal Article
773 0 _tScience (New York, N.Y.)
_gvol. 149
_gno. 3688
_gp. 1047
856 4 0 _uhttps://doi.org/10.1126/science.149.3688.1047
_zAvailable from publisher's website
999 _c17267448
_d17267448