Download the resourceAccess original publishing pageResource informationDate of publication: December 1993Resource Language: EnglishISBN / Resource ID: AGRIS:QY2016600028Journal Articles & BooksAuthors and PublishersAuthor(s), editor(s), contributor(s): Byerlee, D. Husain, T. Data provider AGRIS What is AGRIS? Geographical focusPakistanRelated categoriesfarming systems