PC-I-Proforma for Quetta water supply project (1983) Pakistan, Government of Baluchistan; Associated Consulting Engineering (ACE) Ltd; National Engineering Services (Pakistan); Quetta Development Authority, Directorate of Water Supply and Sewerage
Resistivity survey: progress report No. 1 June 1980 (1980) Kano State, Nigeria, Water Resources and Engineering Construction Agency; WRECA Water Resources and Engineering Construction Agency; Engineering & Consulting Associates (Nigeria) Limited; ECAN; National Engineering Services (Pak.) Ltd; Associated Consulting Engineering (ACE) Ltd
Resistivity survey in 50 villages of Kano State. Appendex (1980) Nigeria, Federal Republic of, Water Resources and Engineering Construction Age; WRECA Water Resources and Engineering Construction Agency; Engineering & Consulting Associates (Nigeria) Limited; ECAN; National Engineering Services (Pak.) Ltd; Associated Consulting Engineering (ACE) Ltd