Lake management
1980
Jorgensen, S. E. |
Jorgensen, S. E.
Proceedings of a Symposium on rare and endangered mollusks (Naiads) of the U.S.
1971
Jorgensen, S. E. |
Sharp, R. W. |
Proceedings of a symposium on the native cats of north America : their status and management
1971
Jorgensen, S. E. |
Mech, L. David |