URI(s)
Identifies LC/NAF RWO
Identifies RWO
Exact Matching Concepts from Other Schemes
Closely Matching Concepts from Other Schemes
Sources
- found: His Tar (extra heavy oil) sands and oil shales, 1982:t.p. (Walter Rühl)
- found: LC data base, 03-17-95(hdg.: Rühl, Walter, 1912-)
Instance Of
Scheme Membership(s)
Collection Membership(s)
Change Notes
- 1983-06-21: new
- 1995-03-17: revised
Alternate Formats