000			00409nam a2200121 4500
999			_c1507 _d1507
008			150530b xxu||||| |||| 00| 0 eng d
050			_aQL 955 .E2 1965
100			_aEbert, James D.
245			_aInteracting systems in development/
260			_aUSA: _bHolt, Rinehart and Winston Inc, _c1965.
300			_aviii, 227 p. : _bill.; _c23 cm.
504			_aIncludes index.
650			_aEmbryology.
942			_2lcc _cBOOKS _hQL 955 .E2 1965