Duncker, L.C.,
«Hygiene awareness workshop», vol. no, TT 145/00. Water Research Commission, WRC, Pretoria, South Africa, p. viii, 48 p. + 16 p. annexes, 2001.
PARTICIP -Freiburg, GE,
«Project cycle management : training courses handbook». European Commission, Evaluation Unit, Brussels, Belgium, p. ii, 74 p. : 34 fig., 2001.