00504nam a22001577a 4500008004100000020001600041050002200057100002900079245005400108250001200162260004200174300007300216650001300289700002200302700002200324150924b        xxu||||| |||| 00| 0 eng d  a 0716726297  aQH 305.2.P87 1995  aPurves, William K.d1995  aLife: The science of biologyc William, Purves K.  a4th ed.  aUSA:bW.H.Freeman and company,c1995.  a1195(82)  p. : ill.bIncludes bibliographical references and  index.  aBiology.  aOrians, Gordon H.  aHeller, H. Craig