%0 Journal Article %T Factors determining crop farmers¡¯ willingness to pay for agricultural extension services in Tanzania: A case of Mpwapwa and Mvomero Districts %A Athman Kyaruzi Ahmad %A Gosbert Lukenku Shausi %A Jumanne Mushi Abdallah %J - %D 2019 %R 10.5897/JAERD2019.1097 %U https://academicjournals.org/journal/JAERD/article-abstract/93DEF0462364