00457cam a22001454a 4500008004100000020002200041100002300063245006500086250001200151260004800163300004400211650001300255700002100268050002200289020327s2003    cauab    b    001 0 eng    a080534473X (pbk.)1 aSmith, Robert Leo.10aElements of ecology /cRobert Leo Smith and Thomas M. Smith.  a5th ed.  aSan Francisco :bBenjamin Cummings,cc2003.  axvi, 682 p. :bill. (some col.), maps ; 0aEcology.1 aSmith, Thomas M.00aQH541b.S624 2003