B.C. Trickle Irrigation Manual Ted W. Van der Gulik, Irrigation Industry Association of British Columbia, British Columbia. Ministry of Agriculture and Food. Resource Management Branch Government of British Columbia, 1999 - 321 من الصفحات |
B.C. Trickle Irrigation ManualTed W. Van der Gulik, Irrigation Industry Association of British Columbia, British Columbia. Ministry of Agriculture and Food. Resource Management Branch Government of British Columbia, 1999 - 321 من الصفحات |