000			00581nam a2200169 4500
999			_c4253 _d4253
008			160901b xxu||||| |||| 00| 0 eng d
022			_a2094-8042
082			_aDPer 370.105 M72 Jan-Dec 2012 V. 60-61
100			_913947 _aKeyod Grace B.
243			_aThe modern teacher
245			_aThe earth's twin problem: _bglobal warming and water acidification/ _cGrace B. Keyod.
260			_aPhilippines: _bIn the Grade School, Inc., _c©2012.
300			_aV61 n1, pages 22-23; _c28 cm.
500			_aThe Modern Teacher
650		0	_913949 _aGreenhouse effect
942			_2ddc _cPER