Todos
WEST, P.W.
WESTHOFF, D.C.
WEYBRIDGE, LABORATORIO CENTRAL VETERINARIO. (Gran Bretaña).
WHITE, K.
WHITTEMORE, C.
WICKINS, JOHN F.
WIDMER, F.
WIGGLESWORTH, V.B.
WILDBRETT, G.
WILEY, R.C.
WILKINSON, J.M.
WILKINSON, MICHAEL
WILLIAMS, W.D.
WILLS, R.
WILLS, J.
WILLS, J.M.
WILSON, P.N.
WILSON, A.
WILSON, A.R.
WILSON, G.F.
WILSON, J.M.
WINDSOR, M.
WINKELMANN, J.
WINTER, H.