000 00300 a2200121 4500
041 _aEnglish
082 _a574.3
_bZOO
245 _aZoology
_b developmental biology block-1
260 _c1987
_aSri Lanka
_bThe Open University
_g1987
300 _a149p.
650 _aZoological Sciences
942 _cLEB
999 _c22318
_d22318