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  1. 1
    Published 1942
    Washington : U.S. G.P.O., 1942.
    38 p. : ill., maps ; 29 cm.
  2. 2
    Published 1970
    Rio de Janeiro : A Equipe, 1970.
    99 p. : ill., maps (3 fold. in pocket) ; 26 cm.
  3. 3
    Published 1973
    Rio de Janeiro : Divisão de Pesquisa Pedológica, DNPEA, Ministério da Agricultura, 1973.
    55 p. : map ; 26 cm.
  4. 4
  5. 5
    by Jhina, Padam Singh
    Published 1962
    New Delhi, Directorate of Extension, Ministry of Food and Agriculture, [1962]
    122 p. illus. 22 cm.
  6. 6
  7. 7
    London, Printed for H.M. Stationery Off., by Darling & Son, 1911.
    viii, 206 p. incl. diagrs. front., plates, maps (2 double in pocket) 25 cm.
  8. 8
    Published 1975
    Curitiba : Centro de Pesquisas Pedológicas , 1975.
    31 p. : ill., maps (1 col., folded in pocket) ; 25 cm.
  9. 9
  10. 10
    Published 1970
    [Colombo] : Water Resources Board, 1970.
    16 p., [7] fold. leaves of plates : col. maps ; 23 cm.

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