Why Customers Leave (and How to Win Them Back)David Avrin, Larry Winget · First published 2019Open the Tome
The 20 Best and Worst Questions Reporters Ask : And How You Can Answer Them toDavid Avrin · First published 2009Open the Tome
A numerical model of the Yellowstone grizzly bear population and its management implicationsDavid E. Avrin · First published 1976Open the Tome