00643nam a22001697a 450000500170000001000150001702000300003203500140006203700130007608200100008910000250009924500630012426000580018727001620024530000510040770000150045820210330174001.0  aENG-129343  a978-81-927088-4-3c235.00  aEN-112875  bDBAD/PUB  a363.7  aBabu, N. V. Surendra  aEnvironmental Studies/cN. V. Surendra Babu and G. Alekhya  aHyderabadbSeven Hills International Publishersc2018  bHyderabade500038a3326/C, Level-4, Surneni Nilayam, Near B K Gupta Park, S R Nagark91 40 23710657, 238000657l91 40 23810657mstudentshelpline.in@gmail.com  axii+300p.c24cm(pbk)bIncluding illustrations.  aG. Alekhya