000 00319nam a2200145Ia 4500
020 _a0000000000000
082 _b175
_a570
100 _a"Roberts , M. B. V."
245 0 _aBiology
260 _bELBS
_aLondon
_c1992
300 _a693
944 _cBK
999 _c392906
_d392906