000 nam a22 7a 4500
999 _c901
_d901
003 OSt
005 20180703152521.0
008 180703b xxu||||| |||| 00| 0 eng d
020 _a8170350549
082 _a574.52632
_bSAN
100 _aSanthanam, R.
110 _aVelayutham, P.
111 _aJegatheesan, G.
245 _aA manual of freshwater ecology /
_cby R. Santhanam, P. Velayutham & G. Jegatheesan.
260 _aDelhi :
_bDaya Publishing House ;
_c1989.
300 _a134 p.,
_c22 cm.
942 _2ddc
_cBK