000 00340nam a22001457a 4500
003 OSt
008 180718b xxu||||| |||| 00| 0 eng d
020 _a9789327257472
082 _a630.717
100 _a Singh, R
245 _a Extension Education
260 _a Ludhiana
_b Kalyani Publishers
_c2015
300 _a406p
942 _2ddc
_cBK
999 _c44453
_d44453