Genetic and seasonal variations of orange wing-color in Colias butterfliesJohn Hiram Gerould · First published 1943Open the Tome
The Marvels and mysteries of scienceClyde Fisher, John Hiram Gerould, James Plummer Poole · First published 1941Open the Tome
Studies on the embryology of the Sipunculidae. I. The embryonal envelope and its homologue. ..John Hiram Gerould · First published 1903Open the Tome
