00631     2200181   4500001002100000005001500021008004100036020002400077035002000101041000700121082001900128090001900147100002000166245009700186260008400283300002700367650005500394INLIS00000000001000220240223110224240223                |          |        aISBN : 0 948073-004  a0010-0521010002  aen  a614.4/SOC/p.82  a614.4/SOC/p.820 aM.V. Thrusfield1 aProceedings of a symposium held at the British Veterinary Associations... /cM.V. Thrusfield  aEdinburgh :bSociety for Veterinary Epidemiology and Preventive Medicine,c1982  axi, 152 p; ill; 21 cm. 4aEPIDEMIOLOGY -- ANIMAL DISEASES -- DATA COLLECTION