The classification of differential operators /
Hufford, George.

APA Citation

Hufford, G., United States. Air Force. Air Research and Development Command., United States. Wright Air Development Division., Biomedical Laboratory. (1960). The classification of differential operators. Wright-Patterson Air Force Base, Ohio: Wright Air Development Division, Air Research and Development Command, United States Air Force.

MLA Citation

Hufford, George, United States. Air Force. Air Research and Development Command, United States. Wright Air Development Division, and Biomedical Laboratory. The Classification of Differential Operators. Wright-Patterson Air Force Base, Ohio: Wright Air Development Division, Air Research and Development Command, United States Air Force, 1960.