R. A. Hefner

发表

INHERITED ABNORMALITIES OF THE FINGERS II. Short Thumbs (Brachymegalodactylism)

R. A. Hefner, 1924 .

Studies of Parajulid Diplopods. No. II. The Micro-Anatomy of the Alimentary Canal of Parajulus impressus Say

R. A. Hefner, 1929 .

Studies of parajulid diplopods. I. The development of the external sexual structures of Parajulus impressus say(8)

R. A. Hefner, 1929 .

HEREDITARY POLYDACTYLYAssociated with Extra Phalanges in the Thumbs

R. A. Hefner, 1940 .