Online Public Access Catalogue (OPAC)Library,Documentation and Information Science Division
“A research journal serves that narrow
borderland which separates the known from the unknown”
-P.C.Mahalanobis
631.6 N469 C1992 C3581
Boon G K Netherlands Economic Institute Case study of a construction process field trenches Rotterdam NEI 1960 21p. Alternative techniques of production, progress report; no.5 * Drainage of farm land Field trenches