- Электронная книгаCheck-list of the Birds of KansasHarrison Bruce Tordoff
- Электронная книгаStudies of Birds Killed in Nocturnal MigrationHarrison Bruce Tordoff
- Электронная книгаCheck-list of the Birds of KansasHarrison Bruce Tordoff
- Электронная книгаStudies of Birds Killed in Nocturnal MigrationHarrison Bruce Tordoff