11. Volume 17, Number 1: Cornell veg-news Collection: Core Historical Literature of Agriculture Publisher: Vegetable Crops Dept., New York State College of Agriculture and Life Sciences, Cornell University Publication Place: Ithaca, N.Y. Date: 1968 Format: Issue
12. Volume 17, Number 2: Cornell veg-news Collection: Core Historical Literature of Agriculture Publisher: Vegetable Crops Dept., New York State College of Agriculture and Life Sciences, Cornell University Publication Place: Ithaca, N.Y. Date: 1968 Format: Issue
13. Volume 17, Number 3: Cornell veg-news Collection: Core Historical Literature of Agriculture Publisher: Vegetable Crops Dept., New York State College of Agriculture and Life Sciences, Cornell University Publication Place: Ithaca, N.Y. Date: 1968 Format: Issue
14. Volume XVII, Number 1: Arkansas farm research Collection: Core Historical Literature of Agriculture Publisher: Agricultural Experiment Station, University of Arkansas Publication Place: Fayetteville, Ark. Date: 1968 Format: Issue
15. Volume XVII, Number 2: Arkansas farm research Collection: Core Historical Literature of Agriculture Publisher: Agricultural Experiment Station, University of Arkansas Publication Place: Fayetteville, Ark. Date: 1968 Format: Issue
16. Volume XVII, Number 3: Arkansas farm research Collection: Core Historical Literature of Agriculture Publisher: Agricultural Experiment Station, University of Arkansas Publication Place: Fayetteville, Ark. Date: 1968 Format: Issue
17. Volume XVII, Number 4: Arkansas farm research Collection: Core Historical Literature of Agriculture Publisher: Agricultural Experiment Station, University of Arkansas Publication Place: Fayetteville, Ark. Date: 1968 Format: Issue
18. Volume XVII, Number 6: Arkansas farm research Collection: Core Historical Literature of Agriculture Publisher: Agricultural Experiment Station, University of Arkansas Publication Place: Fayetteville, Ark. Date: 1968 Format: Issue
19. Number 1015: 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: 1968 Format: Issue
20. Number 1023: 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: 1968 Format: Issue