Search results for: Kowal, Jan M.

Showing 1 - 15 results of 15 Refine Results
  1. 1

    Agricultural ecology of savanna : a study of West Africa

    Authors: Kowal, Jan M.
    Published: Clarendon Press, 1978
    Physical Description: ix, 403 pages : illustrations ; 24 cm
    Book
  2. 2

    An agroclimatological atlas of the northern states of Nigeria

    Authors: Kowal, Jan M.
    Published: Ahmadu Bello University Press, 1972
    Physical Description: 111 pages : 16 folded maps ; 30 x 41 cm
    Map
  3. 3

    Some properties of soils at Samaru, Zaria, Nigeria ; storage of water and its use by crops. 3. Seasonal pattern in soil water changes under various vegetation covers and bare fallo...

    Authors: Kowal, Jan M.
    Published: Institute for Agricultural Research, Samaru, Ahmadu Bello University, 1970
    Physical Description: 16 unnumbered pages : graphs, tables ; 28 cm
    Microfilm Book
  4. 4

    Effect of an exceptional storm on soil conservation at Samaru, Nigeria.

    Authors: Kowal, Jan M.
    Published: Institute for Agricultural Research, Samaru, Ahmadu Bello University, 1972
    Physical Description: 163-173 pages : tables, graphs. ; 25 cm.
    Microfilm Book
  5. 5

    The hydrology of a small catchment basin at Samaru, Nigeria.

    Authors: Kowal, Jan M.
    Published: Institute for Agricultural Research, Samaru, Ahmadu Bello University, 1972
    Physical Description: 27-52, 120-147 pages : illustrations, map, tables, graphs. ; 25 cm.
    Microfilm Book
  6. 6

    Radiation and potential crop production at Samaru, Nigeria.

    Authors: Kowal, Jan M.
    Published: Institute for Agricultural Research, Samaru, Ahmadu Bello University, 1973
    Physical Description: 89-101 pages : tables, graphs. ; 23 cm.
    Microfilm Book
  7. 7

    An appraisal of drought in 1973 affecting groundnut production in the Guinea and Sudan savanna areas of Nigeria

    Authors: Kowal, Jan M.
    Published: Institute for Agricultural Research, Samaru Ahmadu Bello University, 1974
    Physical Description: 149-164 pages : illustrations ; 24 cm.
    Microfilm Book
  8. 8

    An assessment of aridity and the severity of the 1972 drought in northern Nigeria and neighbouring countries

    Authors: Kowal, Jan M.
    Published: Institute for Agricultural Research, Samaru, Ahmadu Bello University, 1974
    Physical Description: 145-158 pages : illustrations ; 24 cm.
    Microfilm Book
  9. 9

    Study of soil surface crusts in the loess plain soils of northern Nigeria.

    Authors: Kowal, Jan M.
    Published: Ahmadu Bello University, 1974
    Physical Description: 93-100 pages : illustrations, tables ; 23 cm.
    Microfilm Book
  10. 10

    Usefulness of ridge cultivation in Nigerian agriculture

    Authors: Kowal, Jan M.
    Published: Institute of Agricultural Research, Samaru, Ahmadu Bello University, 1974
    Physical Description: 136-137 pages : illustrations ; 27 cm.
    Microfilm Book
  11. 11

    A simple device for analyzing the energy load and intensity of rainstorms

    Authors: Kowal, Jan M.
    Published: Institute of Agricultural Research, Samara Ahmadu Bello University, 1974
    Physical Description: 271-280 pages : illustrations tables, diagrams ; 22 cm.
    Microfilm Book
  12. 12

    Water resources and dry matter production for livestock in northern Nigeria

    Authors: Kowal, Jan M.
    Published: Institute for Agricultural Research, Samaru, Ahmadu Bello University, 1975
    Physical Description: 339-351 pages : folded maps ; 25 cm.
    Microfilm Book
  13. 13

    Cotton production in northern states of Nigeria in relation to water availability and crop water use

    Authors: Kowal, Jan M.
    Published: Institute for Agricultural Research, Samaru, Ahmadu Bello University, 1975
    Physical Description: 11-29 pages ; 26 cm.
    Microfilm Book
  14. 14

    Rainfall in the sudan savanna region of Nigeria

    Authors: Kowal, Jan M.
    Published: Institute for Agricultural Research, Samaru, Ahmadu Bello University, 1975
    Physical Description: 24-28 pages ; 24 cm.
    Microfilm Book
  15. 15

    Improving foodcrop production in the Sudan Savanna Savanna zone of northern Nigeria.

    Authors: Kassam, A. H.
    Published: Institute for Agricultural Research, Samaru, Ahmadu Bello University, 1976
    Other Authors: “…Kowal, Jan M.…”
    Physical Description: 341-347 pages : map, table, diagram ; 30 cm.
    Microfilm Book