00290nam a2200109Ia 450000500170000000800410001708200140005810000150007224500510008726000340013830000080017220260224040938.0260224s9999||||xx |||||||||||||| ||und||  a631.7 RAO  aRao, V.M.  0aMicro-irrigation system : an economic analysis  aJaipur : ABD Publishersc2009  a180