Filtering by: Contributor Estes, E. Harvey (Edward Harvey), 1925- Remove constraint Contributor: Estes, E. Harvey (Edward Harvey), 1925- Contributor Fagg, John A. Remove constraint Contributor: Fagg, John A. Contributor Russ, Donald J. Remove constraint Contributor: Russ, Donald J. Subject Nelson, Davis S. Remove constraint Subject: Nelson, Davis S. Year 1980 Remove constraint Year: 1980