TY  - BOOK
AU  - Amin,Afaf Hamdi
TI  - Studies on vaccines and vaccination against gumboro disease 
PY  - 1990///
KW  - Vaccines
KW  - Vaccination
KW  - Poultry
KW  - Virus diseases
N1  - Thesis (Ph.D.) -- Cairo University, 1990.+PDF; Includes bibliographical reference (leaves 85-104); Microfiche; Cairo, Egypt; ASUNET; 2 microfiche : negative
ER  -