Crowell, M. Tornado Favorable Environments and Their Changing Geography. https://oaks.kent.edu/node/10366
Crowell, Michael. n.d. “Tornado Favorable Environments and Their Changing Geography”. https://oaks.kent.edu/node/10366.
Crowell, M. Tornado Favorable Environments and Their Changing Geography. https://oaks.kent.edu/node/10366.