Vol. 8 No. 1 (1974)

Articles

• The Effect of Insecticide Endrin on Soybean Root Nodules Bacteria Rhizobium japonicum

  U. Suriawiria

  1-6

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  Abstract views: 116 times | Downloaded: 72 times

• Tondano Pyroclastic

  M.T. Zen, Muziel Alzwar

  7-19

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  Abstract views: 204 times | Downloaded: 92 times

• Determination of Surface Finish Quality of Metals By Means of Optical Methods

  Ariono Abdulkadir, Richard C. Birkebak

  21-40

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  Abstract views: 188 times | Downloaded: 101 times