E. Stach
Zenji Izawa
Unknown Author
Clarence Karr
T. T. Tomimatsu
C. F. K. Diessel
H. P. Boshoff
Henk Meuzelaar
Ashley, Geo. H.
Percy Edwin Spielmann
N. D. Rusʹi͡anova
Kazuo Horiuchi
Parr, Samuel Wilson
J. G. Speight
Henry How
Pennsylvania. Bureau of Topographic and Geologic Survey.
Bryan A. Coxhead