Vol. 28 No. 7 (1950)

JOHN P NELLIGAN

H A HAMMELMANN

E K WILLIAMS

G W REED, C B BOURNE, ERIC L TEED, ALAN RENOUF

WILLIAM J HULBIG

EDITORIAL STAFF

F R SCOTT, E RUSSELL HOPKINS, LOUIS-PHILIPPE PIGEON, R G PHELAN, STUART THOM, ROY V JACKSON, GILBERT D KENNEDY

GARETH E MAYBEE

F R SCOTT