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  1. 1

    Sweet potato cultures of Asia and South Pacific proceedings of the 2nd Annual UPWARD International Conference [held on] April 2-5, 1991 [at] SEARCA Auditorium, UPLB Campus, College...

    出版 1991
    图书

    Sweet potato cultures of Asia and South Pacific proceedings of the 2nd Annual UPWARD International Conference [held on] April 2-5, 1991 [at] SEARCA Auditorium, UPLB Campus, College, Laguna, Philippines.
  2. 2

    Sweet potato cultivation in Ifugao transitions and change 由 Lleva, Emmanuel

    出版 1991
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    Sweet potato cultivation in Ifugao transitions and change

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