Algal indicators of water pollution by Braj Nandan Prasad and Yashpal Singh Singh Yashpal - Prasad Braj Nandan; Singh Yashpal (Dehra Dun Bishen Singh Mahendra Pal Singh, 1996)
Bibliographical references 230-263p; ^n23/CSL/Carb/2000-2001/240^d2000-10-12^mPurchase; ; 2000-2001/321^b2000-11-01^c382^d2000-10-23^eRs.9,522.00^fBishen Singh Mahendra Pal Singh; ; 2000-11-03^bSB^c2000-12-12^dSK
Keywords: River algae; Botany