Studies on the efficacy of Newcastle Disease Virus RIVS - V4 strain used as oral vaccine Siregar, S.B. text 1991 id Siregar, S.B. Hemera Zoa, -- Vol. 74(1): p.25-38 ND 240215 20240215083944 INLIS000000000000146 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)