000 00409nam a2200145 a 4500
999 _c7992
_d7992
020 _a8121916542
100 1 _aAsthana, D K
245 1 0 _aEnvironment: problems and solutions
260 _aNew Delhi :
_bS.chand and company,
_c2010.
300 _a434 p. ;
650 _aEnvironmental Engingineering
700 1 _aAsthana, Meera
856 4 0 _uhttp://www.amazon.com/exec/obidos/ASIN/chopaconline-20
942 _cBK