Rural water supplies : report on a WHO meeting
Treść karty:542,043 RURAL Rural water supplies : report on a WHO meeting : Stevenage 1—5 November 1982 / World Health Organization : Regional Office for Europe. — Copenhagen : WHO, 1983. — [4], 66 s. : wykr. ; 21 cm (EURO Reports and Studies. 87) ISBN 92 890 1253 6