TY - BOOK AU - Molen,W.H.van der AU - Beltran,J.Martinez AU - Ochs,W.J. ED - Food and Agriculture Organization of the United Nations. TI - Guidelines and computer programs for the planning and design of land drainage systems AV - ORG S612 F35 no.62 PY - 2007/// CY - Rome PB - Food and Agriculture Organization of the United Nations, KW - Irrigation KW - Engineering KW - Evaluation KW - Drainage KW - Management N1 - Includes bibliographical references ER -