000			00487nam a2200169Ia 4500
003			NIELib
008			211019s9999||||xx |||||||||||||| ||und||
020			_a0356050009
082			_a507 _bCOL
100			_aCollis, Margaret _95605
245			_aUsing the environment 3 tacking problems part 2 : A Unit for teachers
260			_bMecdanold Educational, _c1974. _aLondon :
300			_a72p. _bCol.ill.; _c23cm
650			_aEnviromental Problems
650			_aScience
942			_2ddc _cLM
999			_c36995 _d36995