Prentice Hall · University of Oklahoma Press
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Deserts on the March | 978-0-8061-1667-9 (0-8061-1667-6) | 1980 |
| Lands Beyond the Forest, | 978-0-13-522698-8 (0-13-522698-8) | 1969 |
| This Is Our World | 978-0-8061-0933-6 (0-8061-0933-5) | 1981 |
B.S. · B. Sears · P S · Paul B. · Paul B. Sears · Paul S. · paul sears