Srinivas, T., Rizvi, S., Aw-Hassan, A., Manan, A. R., & Kadian, M. s. (2013). TECHNICAL EFFICIENCY OF SEED POTATO FARMERS OF BADAKSHAN PROVINCE OF AFGHANISTAN. Potato Journal, 39(2). https://epubs.icar.org.in/index.php/PotatoJ/article/view/32160