000 00414nam a2200169Ia 4500
999 _c29032
_d29032
005 20220527102402.0
008 180712s9999 xx 000 0 und d
020 _a9231014021
041 _aEN
082 _a371.3574
_bUNE
_223
100 _aUNESCO
245 _aNew trends in biology teaching
260 _aParis
_bUnesco
_c1977
300 _a(v.iv-ix, 235 p.)
500 _aIncludes bibliography.
942 _cS