00609 a2200193 4500 131444 OSt 20210913171134.0 628.3 S32S Spellman, Frank R. Spellman's standard handbook for wastewater operators by Frank R. Spellman 2nd ed. Boca Raton CRC Press 2011 3v. (v.1:414; v.2:461; v.3:344p.) 7522 v.1; 7523 v.2; 7524 v.3 Sewage disposal--Employees--Certification; Sewage disposal plants; United States ddc BK 5924 5924 0 0 0 0 TXB CURAJ CURAJ 2012-06-08 EVS 0.00 628.3 S32S 7523 2024-11-21 2020-09-02 BK 0 0 0 0 TXB CURAJ CURAJ 2012-06-08 EVS 134.00 628.3 S32S 7522 2024-11-21 2020-09-02 BK 0 0 0 0 TXB CURAJ CURAJ 2012-06-08 EVS 0.00 628.3 S32S 7524 2024-11-21 2020-09-02 BK