551.5
BAT

BB1132
BB1133

Batra,Sanjay kumar Taxmann's environmental science / by Sanjay Kumar Batra,Kanchan Batra and Harpreet Kaur. - 6th ed.. - New Delhi : Taxmann, Rs.625/-
: Includes index 9789357782364 Rs. 625.00 * ENVIRONMENTAL SCIENCE * * * Title