000			00333nam a2200133Ia 4500
008			221226s9999 xx 000 0 und d
020			_a9788131806418
041			_aeng
082			_a333.7 _bSHA
100			_aSharma, J P _91447896
245			_aEnvironmental Studies
250			_a3rd ed
260			_aBangalore _bUniversities Press
999			_c940101 _d940101