000 00406nam a22001457a 4500
999 _c6172
_d6172
008 180507b xxu||||| |||| 00| 0 eng d
020 _a81-219-1654-2
082 _a333.7 AST
100 _aASTHANA D.K
245 _aEnvironment
_bProblems and solutions
_cD.K Asthana and Meera Asthana
_hEnglish
260 _aNew Delhi
_bS Chand
_c1998
300 _a434p
_c24cm
650 _2Environment
942 _2ddc
_cBOOKS