na INLIS000000000000146 20240215083944 0010-0521000146 240215 | | id Siregar, S.B. Partadiredja, M. Studies on the efficacy of Newcastle Disease Virus RIVS - V4 strain used as oral vaccine / Siregar, S.B. 1991 Hemera Zoa, -- Vol. 74(1): p.25-38 ND