M Norman, S Twetman, A Hultgren Talvilahti [...]
Roald J. Shern, Suzanne M. Amsbaugh, G. Ransom Reynolds
T.M. Marthaler
George E. Schmauch, Earl J. Serfass
Heikki Tuutti, Eino Honkala, Juhani Laurinkari
L.R. Brown, J.O. White, I.M. Horton [...]
G.K. Stookey
E.C.M. Lo, L.M.A. Tenuta, C.H. Fox
H.P. Whelton, A.J. Spencer, L.G. Do [...]
L.W. Ripa
