P. Sitorus [et.al.] text Bogor Lembaga Penelitian Peternakan 1979 Jilid 1 id xii, 381 p.: ill; 23 cm. P. Sitorus [et.al.] 636(063)/SEM/p79(1) 240227 20240227025312 INLIS000000000010328 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)