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  1. 421
    Soil organic matter and its role in crop production /

    Soil organic matter and its role in crop production / by Allison, F. E.

    Published 1973
    Subjects:
    Book
  2. 422
    Optimizing the soil physical environment toward greater crop yields /

    Optimizing the soil physical environment toward greater crop yields /

    Published 1972
    Subjects:
    Book
  3. 423
    Extensión o comunicación? : la concientización en el medio rural /

    Extensión o comunicación? : la concientización en el medio rural / by Freire, Paulo

    Published 1973
    Book
  4. 424
    Deciduous orchards /

    Deciduous orchards / by Chandler, William H.

    Published 1965
    Book
  5. 425
    Outlines of plant pathology /

    Outlines of plant pathology / by Strobel, Gary A.

    Published 1970
    Subjects:
    Book
  6. 426
    Moving off the yield plateau /

    Moving off the yield plateau /

    Published 1972
    Book
  7. 427
    Oats and oat improvement /

    Oats and oat improvement /

    Published 1961
    Book
  8. 428
    Principios del avenamiento o drenaje /

    Principios del avenamiento o drenaje /

    Published 1972
    Subjects:
    Book
  9. 429
    The Meteorological observer's handbook /

    The Meteorological observer's handbook /

    Published 1939
    Subjects: “…OBSERVACIONES METEOROLOGICAS 21081…”
    Book
  10. 430
    Producción ovina /

    Producción ovina / by Haresign, William

    Published 1989
    Subjects: “…OVINOS 21172…”
    Book
  11. 431
    Orientación económica de la agricultura argentina /

    Orientación económica de la agricultura argentina / by Tenembaum, Juan L.

    Published 1946
    Book
  12. 432
    Enfoque ecológico para el control de la parasitosis ovina /

    Enfoque ecológico para el control de la parasitosis ovina / by Johnstone, Ian L.

    Published 1971
    Subjects: “…OVINOS 21172…”
    Book
  13. 433
    Manual de piscicultura en el centro de Africa Oriental /

    Manual de piscicultura en el centro de Africa Oriental / by Maar, A.

    Published 1971
    Book
  14. 434
    Origine des plantes cultivées /

    Origine des plantes cultivées / by De Candolle, Alph

    Published 1883
    Subjects:
    Book
  15. 435
    Overcoming world hunger /

    Overcoming world hunger /

    Published 1969
    Book
  16. 436
    Weather and our food supply /

    Weather and our food supply /

    Published 1964
    Book
  17. 437
    La extracción del aceite de oliva : sus principales problemas técnicos /

    La extracción del aceite de oliva : sus principales problemas técnicos / by Risueño, Antonio

    Published 1950
    Subjects: “…ACEITE DE OLIVA 17117…”
    Book
  18. 438
    Instalaciones para ovinos /

    Instalaciones para ovinos / by García, Sergio Daniel

    Subjects:
    Book
  19. 439
    Design, planning and operation of in vitro genebanks /

    Design, planning and operation of in vitro genebanks /

    Published 1986
    Book
  20. 440
    Cercospora del olivo /

    Cercospora del olivo / by Gatica, Marta

    Published 1983
    Subjects:
    Book

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