000 00556nam a2200169 4500
001 1976/88
005 20130515020022.0
008 111112s9999 xx 000 0 und d
082 0 0 _a510. 054 096
100 1 _a"0, . "
245 1 0 _a"seminar on the development of science & mathematics concepts:
_bin young children in african countries,nairobi,sept.17-27/
_c .. "
250 _a ed.
260 _anairobi :
_bunesco-unicef
_c1974.
300 _a", 95p.;
_c30 cm."
504 _a
650 0 _a"science-handbooks,manuals etc
_xmathematics-handbooks,manuals"
999 _c59714
_d59714