000 00289nam a2200133Ia 4500
100 _aHeller,R.
365 _b
_4.50
942 _cBK
654 _a
245 _aNew trends in biology teaching vol-1
260 _aParis
_bUnited Nations
_c1967
082 _a574.07
300 _bPb
_a298,xii
999 _c349732
_d349732
041 _aeng