000 00270nam a2200109Ia 4500
100 _aSlack J M W
020 _a0-632-05233-3
245 _aEssential developmental biology .-0-632-05233-3
260 _bBlackwell Sci Pub, U S A
082 _aK:7/P1/B23976
300 _a322 p
999 _c41345
_d41345