000 00635nam a22002054a 4500
003 EC-PaCDF
005 20190618151732.0
008 190618s1976 -usa||||||||||||||||eng d
040 _aEC-PaCDF
_bspa
_cEC-PaCDF
041 0 _aeng
082 0 4 _223
_a578.776
110 1 _aUS Environmental Protection Agency
245 1 0 _aMicroscopic analysis of plankton, periphyton, and activated sludge /
_cUS Environmental Protection Agency.
260 3 _a[Washington] :
_bUS Environmental Protection Agency,
_c1976.
300 _a[S.p.] :
_bil. ;
_c27 cm.
546 _aInglés
653 _aPlancton
653 _aPerifiton
942 _2ddc
_cBOOK
999 _c14430
_d14430