Books by Clark, Donald R.
Index to volumes I & II, milia
Index to volumes I & II, miliary discharges
The 1830 federal census of Law
The 1830 federal census of Lawrence County, OH
Bats and environmental contami
Bats and environmental contaminants
Ecological study of the worm s
Ecological study of the worm snake Carphophis vermis (Kennicott)