000 00601nam a22002537a 4500
003 OSt
005 20180914112602.0
008 180914b xxu||||| |||| 00| 0 fre d
020 _a9231010581
040 _aLB-BrCRDP
082 _a507 U56n
110 _aUnesco
245 _aNew Unesco source book for science teaching.
260 _aParis
_bUnesco
_c1973
300 _a269p
_c23cm
520 _a
630 _aScience
630 _aStudy and teaching
630 _aScience
630 _aExperiments
630 _aJuvenile literature
630 _a Experiments.
942 _2ddc
_cBK
999 _c19841
_d19841