1. Field tests of some drain tube envelope materials;Broughton,1982
2. Predicting drain silting potential;Lagacé,1983
3. Synthetic envelope materials for subsurface drainage tubes;Rollin,1985
4. Filtration opening size of geotextiles;Rollin;A.S.T.M. Standardization News,1986
5. Study of the different techniques used to determine the filtration opening of geotextiles;Falyse,1985