00533cam a2200193   4500001001100000005001700011008004100028020001500069100001700084245001300101260003600114264003500150300003400185504005000219650001300269650002100282700001600303700002000319000000941420231003135818.0150417s1987    xx            000 0 eng d  a01744803261 aHarper, G.H.10aBiology.  aSurrey :bThomas Nelson,c1987.  aSurrey :bThomas Nelson,c1987  a172 pages :b: illustrations.  aIncludes bibiliographic references and index. 0aBiology. 7aBiology.2sears.1 aKing, T. J.1 aRoberts, M.B.V.