00569nam a22001457a 4500003000400000005001700004008004100021040001400062100002500076245015200101260000900253300003000262500009800292504003300390OSt20171010095505.0120808t        xxu||||| |||| 00| 0 eng d  aMMSUcULS  aLayaoen, Heraldo L.   aCrop microenvironment modification through irrigation, mulching, row spacing and mixed cropping to optimize land and water usecHeraldo L. Layaoen   c1981  axxv, 265 leaves c28 cm.   aThesis (PhD.Agronomy-Cropping Systems) -- University of the Philippines, Los Baños, Laguna   aBibliography: leaves 247-260