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  1. 41
    by Worthen, Edmund Louis, 1882-
    Published 1956
    New York, Wiley [1956]
    439 p. illus. 22 cm.
  2. 42
    by Fay, Ivan Glen, 1894-
    Published 1946
    Madison, Wis. : State Board of Vocational and Adult Education, 1946, [c1943]
    x, 187 p. : forms ; 27 cm.
  3. 43
    Published 1972
    [New Delhi : Indian Council of Agricultural Research, 1972]
    xvi, 639 p. : maps (part col.) ; 25 cm.
  4. 44
    by Gehrs, John Henry, 1882-
    Published 1924
    New York, The Macmillan Co., 1924.
    viii, 444 p. illus. diagrs. 19 cm.
  5. 45
    Published 1892
    Kazanʹ : N.A. Ilʹ︠i︡ashenko, 1892.
    iv, xi, 151 p.
  6. 46
    by Miller, Merritt Finley, 1875-
    Published 1924
    Boston, New York [etc.] Ginn and company [c1924]
    v, [1], 386 p. illus., map. 20 cm.
  7. 47
    Berlin : Izd. A.F. Devriena, 1922.
    95 p. : ill. ; 22 cm.
  8. 48
    Published 1934
    Leningrad : Izd-vo Akademii nauk SSSR, 1934.
    197 p. : ill., map ; 25 cm.
  9. 49
    Published 1956
    Moskva, Izd-vo Akademii nauk SSSR, 1956.
    385 p. illus., maps (part fold.)
  10. 50
    Published 1970
    [Colombo] : Water Resources Board, 1970.
    16 p., [7] fold. leaves of plates : col. maps ; 23 cm.
  11. 51
    Published 1970
    Dharwar [1970]
    82 p. col. maps. 30 cm.
  12. 52
    by Jhina, Padam Singh
    Published 1962
    New Delhi, Directorate of Extension, Ministry of Food and Agriculture, [1962]
    122 p. illus. 22 cm.
  13. 53
    Published 1988
    Apatity : Kolʹskiĭ filial AN SSSR, 1988.
    120 p. ; 27 cm.
  14. 54
    by Holzapfel, Paul, b. 1865
    Published 1889
    Halle : Gundlach & Eggers, 1889.
    32 p. ; 23 cm.
  15. 55
    Published 1973
    Rio de Janeiro : Divisão de Pesquisa Pedológica, DNPEA, Ministério da Agricultura, 1973.
    55 p. : map ; 26 cm.
  16. 56
    Published 1975
    Curitiba : Centro de Pesquisas Pedológicas , 1975.
    31 p. : ill., maps (1 col., folded in pocket) ; 25 cm.
  17. 57
  18. 58
    Published 1990
    Moskva : "Nauka", 1990.
    246 p. : ill. ; 23 cm.
  19. 59
    by Harroy, Jean Paul, 1909-
    Published 1944
    Bruxelles, M. Hayez, 1944.
    x, 557 p. : ill. ; 26 cm.
  20. 60
    Published 1976
    Curitiba : Serviço Nacional de Levantamento e Conservação de Solos, EMBRAPA, Vinculada ao Ministério da Agricultura, 1976.
    32 p. : ill. (some col.) ; 24 cm.

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