Improved grade crossing safety with in-pavement warning lightsTheodore E. Cohn · First published 2005Open the Tome
Practical Personnel Polocies for SM 0991Theodore Cohn · First published 1984 · Latest edition 1998Open the Tome
Variation and speciation in the grasshoppers of the Conalcaeini (Orthoptera, Acrididae, Melanoplinae) the lowland forms of western Mexico, the genus BarytettixTheodore J. Cohn · First published 1974Open the Tome
The arid-land katydids of the North American genus Neobarrettia (Orthoptera: Tettigoniidae)Theodore J Cohn · First published 1965Open the Tome
