00561nam a22002057a 4500 GCWUF 20191201234959.0 191201b xxu||||| |||| 00| 0 eng d MAIN ENG MAIN 577 SMI Smith, T. M. 2653 Elements of Ecology New York : Addision Wesley, 1997 : 555 p. : ill ; 25 cm. Include Index Ecology 2645 Biology--Fieldwork 2646 Ecology--Study and teaching (Higher) 2654 ddc BK 10319 10319