By Siegel, Allen M.
By Dewey, Allen M.
By Potter, Allen M., Fotheringham, Peter, Kellas, James G.
By Steele, Allen M.
By Schoen DVM MS, Allen M., Wynn DVM, Susan G.
By Potter, Allen M., etc.
By Larson, Roy A., Armitage, Allen M.
By Laing, Allen M., Peake, Mervyn