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- [7] EDUCATIONAL REQUIREMENTS FOR EXTENSION WORKERS WITH SUGGESTIONS ON IN-SERVICE TRAINING [J]. JOURNAL OF FARM ECONOMICS, 1958, 40 (02): : 361 - 372
- [8] DEVELOPMENT EXTENSION SERVICE TO MEETING THE REQUIREMENTS OF BUFFALO BREEDERS IN IRAQ [J]. IRAQI JOURNAL OF AGRICULTURAL SCIENCES, 2020, 51 (01): : 432 - 442