000 00339nam a2200133Ia 4500
008 211215s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aFlexner, L B
245 0 _aGestation.
260 _bJOSIAH MACY JR FOUNDATION
_aNEW YORK
_c1957
300 _a231 p p.
653 _aZOOLOGY
942 _c1
999 _c43983
_d43983