By f m reza & s seely
By R.C. Holland
By John D Kraus
By Chester A. Arnold
By pelczar & reid
By Sinnott, Dunn, & dobzhansky
By Woodward & Woodward
By Bradley Patten
By Edwards & Hassall
By Dixon & Massey
By John J. D'Azzo
By paul a samuelson
By K. Pethebridge, W. Williams
By A. Mychael
By J.R. Jenneson
By Gilbert smith
By Ruel V. Churchill
By Manuel C. Molles Jr.
By Joseph W. Goodman