W R Walker. (1989). FAO irrgation and drainage paper N.45: Guidelines for designing and evaluating surface irrigation systems. Rome: FAO.
Styl ChicagoW R Walker. FAO Irrgation and Drainage Paper N.45: Guidelines for Designing and Evaluating Surface Irrigation Systems. Rome: FAO, 1989.
Citace podle MLAW R Walker. FAO Irrgation and Drainage Paper N.45: Guidelines for Designing and Evaluating Surface Irrigation Systems. Rome: FAO, 1989.
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