00266nam a22001097a 4500003000400000008004100004082001600045100002000061245002800081260003900109300000800148OSt240719b        |||||||| |||| 00| 0 eng d  a574.5bO21F  aOdum, Eugene P.  aFundamentals of ecology  aPhiladelphiabW. B. Saundersc1971  a574