000			00373nam a2200145Ia 4500
005			20260205055333.0
008			260111s9999||||xx |||||||||||||| ||und||
082			_a371.3 V519T
100			_aVeena Singh
245		0	_aTeaching of environment
260			_aNew Delhi _bAdhyayan pub. _c2007
300			_a216p.
690			_aTeaching techniques - Environment
942			_cBK
999			_c152181 _d152181