000 00391nam a2200109 4500
245 _aSelected instructional activities and references.
_ccompiled by Robert D Towsend,.
710 _aTownsend, Robert O.
260 _aOhio.
_bNational Training and oerational Training Center.
_c1981
300 _aviii,205p .; 22cm.-
490 _amonograph series anaerobic digistion.
082 _a576.113
_b TOW
999 _c59987
_d59987