Water pricing models : a survey / Henrique Monteiro
Wastewater engineering : treatment and resource recovery / Metcalf & Eddy; rev. by George Tchobanoglous... [et al.]
Integrated solid waste management : engineering principles and management issues / George Tchobanoglous, Hilary Theise and Samuel A. Vigil
Prontuario de calefaccion, ventilacion y aire acondicionado / John Porges and Fred Porges; trad. Jorge Bagaría Blanxart