Results: 1 - 4 of 4
Dec 31, 1985
Open File Report
… exploitation. … Scafe, D.W. … Sham, P.C. … Scafe, D.W. and Sham, P.C. (1986): Sand and gravel …
Dec 31, 1986
Open File Report
… … Scafe, D.W. … Ray, C.M. … Sham, P.C. … Scafe, D.W., Ray, C.M. and Sham, P.C. (1987): Sand and gravel …
Dec 31, 1986
Open File Report
… for aggregate. … Scafe, D.W. … Sham, P.C. … Ray, C.M. … Scafe, D.W., Sham, P.C. and Ray, C.M. (1987): …
Dec 31, 1986
Open File Report
… economic value. … Scafe, D.W. … Sham, P.C. … Scafe, D.W. and Sham, P.C. (1987): Sand and gravel …