TY  - BOOK
AU  - Spellman, Frank R.
TI  - Safe work practices for wastewater treatment plants
SN  - 1-58716-000-5
PB  - Technomic Pub.
UR  - http://krc.clri.res.in:80/cgi-bin/koha/opac-detail.pl?biblionumber=10853
ER  -