1. 1
   The progress and development of rubber smallholders : proceedings of the first seminar held in Medan, Indonesia, 25-27 February 1975

   出版 1976

   Kuala Lumpur : Association of Natural Rubber Producing Countries, 1976, c1977.

   ix, 160 p. : ill. ; 26 cm.

   “...Association of Natural Rubber Producing Countries...”
   

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2. 2
   The progress and development of rubber smallholders : proceedings of the third seminar, held in Cochin, Kerala, India, 24-30 November 1977

   出版 1979

   Kuala Lumpur, Malaysia : Association of Natural Rubber Producing Countries, 1979.

   xiv, 271 p. ; 26 cm.

   “...Association of Natural Rubber Producing Countries...”
   

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3. 3
   The Progress and development of rubber smallholders : proceedings of the second seminar held in Hat Yai, Thailand, 18-23 October 1976

   出版 1978

   Kuala Lumpur, Malaysia : Secretariat, Association of Natural Rubber Producing Countries, 1978.

   xi, 229 p. : ill. ; 26 cm.

   “...Association of Natural Rubber Producing Countries...”
   

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