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- herbicides[remove]3
- chemicals2
- pesticides2
- CD-ROM1
- adoption1
- corn1
- developing nations1
- development communication1
- educational programs1
- environmental quality1
- farm safety1
- farmer attitudes1
- farmer perceptions1
- farming methods1
- insecticides1
- interactive media1
- pest management1
- plant protection1
- pollution1
- research communication1