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  1. 1
    by Ghorayshi, Majid
    Published 1988
    Uppsala : Swedish University of Agricultural Sciences, Division of Soil and Ecochemistry, 1988.
    151 p. : ill. ; 24 cm.
  2. 2
    New Delhi : Indian Council of Agricultural Research, [1976]
    iii, 75 p. ; 25 cm.
  3. 3
    by Pathak, A. N.
    Published 1977
    Kanpur [India] : Dept. of Soils & Agricultural Chemistry, Chandra Shekhar Azad University of Agriculture & Technology, [1977]
    31 leaves ; 32 cm.
  4. 4
    by Rahmatullah
    Published 1991
    Germany : Justus Liebig-Universität Giessen, 1991.
    2, 113 p. : ill., maps ; 21 cm.
  5. 5
    by Salomon, Eva
    Published 1999
    Uppsala : Swedish University of Agricultural Sciences, 1999.
    1 v. (various pagings) : ill., map ; 24 cm.

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