000			00372 a2200121 4500
008			141010b1978 xxu||||| |||| 00| 0 eng d
082			_aCH500
100			_aBarr, Bonnie B. and Leyden, Michael B.
245			_aScience Seven A/ _cBonnie B. Barr and Michael B. Leyden
260			_aDon Mills : _bAddison Wesley Publishers, _c1978.
300			_a239p.
650			_aEcosystems
999			_c10427 _d10427