003150000a22001090004500060000800000082001500008100001800023245009400041260004400135300000800179650001800187  a100  a570 SCI.02  aBakes, Master  aScientific American Resource Library : Reading in the Life Science V.2 : Off Prints 52-93  aSan Francisco, W.H. Freeman and Company  a811  aLife Sciences