000 00250nam a22000857a 4500
999 _c516662
_d516662
100 _aVeena, D. R.
_923218
245 _aBio- gas technology :
_bA study of community bio- gas plant
_cby D. R. Veena
260 _aNew Delhi
_bAshish Pub.
_c1986
300 _a94p.