TY  - BOOK
AU  - Spellman, Frank R.
TI  - Spellman's standard handbook for wastewater operators [3 volume set]
SN  - 9781439818909
U1  - 628.3 
PY  - 2011///
CY  - Boca Raton
PB  - CRC Press
KW  - Sewage disposal -- Employees -- Certification -- United States -- Handbooks, Manuals, etc
N1  - Contents: v.1. Fundamental level -- v.2. Intermediate level -- v.3. Advanced level
ER  -