000 003350000a22001450004500
008 140223b1977 xxu||||| |||| 00| 0 eng d
041 _aENG
080 _aG L7
082 _aG L7
100 _aALLEN (Robert Day)
700 _aOthers
245 _aScience of LIFE
260 _aNew York
_bHarper and Row
_c1977
650 _aBIOLOGY
999 _c229185
_d229185