W Bart Snellen. (1996). Irrigation water management N.10: Irrigation scheme operation and maintenence: Training Manual. Rome: FAO.
Chicago-tyylinen lähdeviittausW Bart Snellen. Irrigation Water Management N.10: Irrigation Scheme Operation and Maintenence: Training Manual. Rome: FAO, 1996.
MLA-viiteW Bart Snellen. Irrigation Water Management N.10: Irrigation Scheme Operation and Maintenence: Training Manual. Rome: FAO, 1996.
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