Jena, K. K. text Metro Manila, Philippines IRRI 2012 monographic vi, 105 p. : ill. ; 23 cm. 633 IRR 2012 A052 Or. 9789712202896 http://www.loc.gov/catdir/toc/fy13pdf05/2012325656.html http://www.loc.gov/catdir/toc/fy13pdf05/2012325656.html