Ponce, Eliseo. "Factors influencing agricultural knowledge adoption level, average rice yield, participation level, and perception level of small-scale rice farmers : a case study of Samahang Nayon members in Leyte, Philippines /." Doctoral dissertation, Ohio State University, 1981. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487157953418196Chicago Manual of Style (17th edition)