UN-HABITAT -Nairobi, KE, United Nations Human Settlements Programme, Rome, I. T. C. E. R. F. E. -, and Rome, I. T. W. S. S. C. C. Netw,
“CERFE activity report, September 1993-April 1995”. Center for Research and Documentation Febbraio '74, Rome, Italy, p. 100 p., 1995.