00361nam a2200157Ia 4500003000500000008004100005020001000046040000900056041001200065082002300077100002000100100001800120245004700138260000600185650001200191NDCL180829s9999||||ii |||||||||||||| ||eng||  a10551  aNDCL  aEnglish  a131.3 PLS216th ed  aHaldane, J.B.S.  aPenrose, L.S. 4aThe biology of mental defectcL.S. Penrose  c0  aZoology