11. Volume XV, Number 2: Arkansas farm research Collection: Core Historical Literature of Agriculture Publisher: Agricultural Experiment Station, University of Arkansas Publication Place: Fayetteville, Ark. Date: 1966 Format: Issue
12. Volume XV, Number 3: Arkansas farm research Collection: Core Historical Literature of Agriculture Publisher: Agricultural Experiment Station, University of Arkansas Publication Place: Fayetteville, Ark. Date: 1966 Format: Issue
13. Volume XV, Number 4: Arkansas farm research Collection: Core Historical Literature of Agriculture Publisher: Agricultural Experiment Station, University of Arkansas Publication Place: Fayetteville, Ark. Date: 1966 Format: Issue
14. Volume XV, Number 5: Arkansas farm research Collection: Core Historical Literature of Agriculture Publisher: Agricultural Experiment Station, University of Arkansas Publication Place: Fayetteville, Ark. Date: 1966 Format: Issue
15. Volume XV, Number 6: Arkansas farm research Collection: Core Historical Literature of Agriculture Publisher: Agricultural Experiment Station, University of Arkansas Publication Place: Fayetteville, Ark. Date: 1966 Format: Issue
16. Number 1012: Bulletin Collection: Core Historical Literature of Agriculture Publisher: Cornell University Agricultural Experiment Station, New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1966 Format: Issue
17. Number 1011: Bulletin Collection: Core Historical Literature of Agriculture Publisher: Cornell University Agricultural Experiment Station, New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1966 Format: Issue
18. Number 1009: Bulletin Collection: Core Historical Literature of Agriculture Publisher: Cornell University Agricultural Experiment Station, New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1966 Format: Issue
19. Number 811: Bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State Agricultural Experiment Station Publication Place: Geneva, N.Y. Date: 1966 Format: Issue
20. Number 812: Bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State Agricultural Experiment Station Publication Place: Geneva, N.Y. Date: 1966 Format: Issue