21
Kennedy, George A.
| The University of North Carolina Press |
1991
24
Kennedy, George A.
| Univ.of North Carolina Press |
1984
26
Lenski, Gerhard E.
| The University of North Carolina Press |
1984
27
Kautsky, John H.
| University of North Carolina Press |
1982
28
Bozeman, Theodore Dwight
| University of North Carolina Press |
1977