TY - BOOK AU - Youssef,Nawal Mohamed Ali TI - The antibody response of pregnant ewes to rift valley fever virus vaccine and the resulting maternal immunty PY - 1984/// KW - Ewes KW - Pregnancy KW - Viral vaccines KW - Veterinary virology N1 - Thesis (M.S.)--Cairo University, 1984; Includes bibliographical references (leaves 139-153); Microfiche; ASUNET; Ain Shams University; 3 microfiches : negative ER -