TY  - BOOK
AU  - Vander Zijpp, A J  .
AU  - Sybesma ,W  .
ED  - Vander Zijpp                                                                                                                                                                                                                                                   . 
TI  - Improving genetic disease resistance in farm animals   vol-52 / 
SN  - 0  7923  0518  3
U1  - 636.0896 
PY  - 1988///
CY  - London : 
PB  - Kluwer Academic Publishers , 
ER  -