00332nam a2200121Ia 4500008004000000020001800040082001500058100001800073245004100091260004400132300000800176650002600184210210b1990   xxu||||| |||| 00| 0 eng d  a81 7040 171 2  a574.5 NAIP  aNAIR (P K G).  aPrinciples of environmental biology.  aBombaybHimalaya Publishing Housec1990  a188  aEnvironmental biology