“Technical information / GATE”. German Appropriate Technology Exchange (GATE) /Deutsche Gesellschaft für Technische Zusammenarbeit (GTZ), Eschborn, Germany.
Technical Manual Series on Rural Water Supply and Sanitation. Colombo, Sri Lanka: NORAD, Norwegian Agency for Development Cooperation.
“Technical note series / DDWS”. India, Department of Drinking Water Supply, New Delhi, India.
Technical publication series / UNEP. Nairobi, Kenya: UNEP, United Nations Environment Programme.
Technical report / EAWAG. Duebendorf, Switzerland: Swiss Federal Institute for Environmental Science and Technology (EAWAG).
Technical report / EEA. Copenhagen, Denmark: European Environment Agency (EEA).