Layaoen, Heraldo L.  <br/><br/>
Crop microenvironment modification through irrigation, mulching, row spacing and mixed cropping to optimize land and water use 
Heraldo L. Layaoen  
 -  1981 
 - xxv, 265 leaves   28 cm.  
<br/><br/> Thesis (PhD.Agronomy-Cropping Systems) -- University of the Philippines, Los Baņos, Laguna  
<br/><br/>Bibliography: leaves 247-260