IRRI text Philippines International Rice Research Institute 1987 vi, 260 hlm : ilus.; 22 cm IRRI Nitrogen Fertilizers Rice Agriculture 631.81 631.81 IRR e 971-104-174-x 20211008024510 INLIS000000000000771 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)