Wastewater stabilization ponds by Spellman, Frank R., Drinan, Joanne

Available for University of the Philippines Diliman College of Engineering via CRCnetBASE. Click here to access
Also available remotely for University of the Philippines Diliman College of Engineering via CRCnetBASE. Click here to access thru EZproxy

Water and wastewater treatment a guide for the nonengineering professional by Drinan, Joanne

Water and wastewater treatment a guide for the nonengineering professional by Drinan, Joanne E., Spellman, Frank R.

The Drinking water handbook by Spellman, Frank R.

The handbook for waterworks operator certification by Spellman, Frank R.

Water & wastewater treatment a guide for the nonengineering professional by Drinan, Joanne