TY - GEN AU - Muntiu,N AU - Dohotaru,V AU - Bercan,A AU - Tomescu,A TI - [Determining the keeping quality of concentrated foot-and-mouth disease vaccine by measurement of PD 50 in cattle] SN - 0514-7166 PY - 1967///1119 KW - Animals KW - Aphthovirus KW - immunology KW - Cattle KW - Hydrogen-Ion Concentration KW - Preservation, Biological KW - Viral Vaccines N1 - Publication Type: Journal Article ER -