title | ISBN-13 (ISBN-10) | year of publication |
---|---|---|
The Animal Kingdom | 978-0-02-593980-6 (0-02-593980-7) | 1965 |
The Little-Known Pika | 978-0-02-593960-8 (0-02-593960-2) | 1977 |
Vertebrate Biology | 978-0-03-057959-2 (0-03-057959-7) | 1982 |
R. T. · R. Thomas · Robert O. · Robert Orr · Robert T. · Robert T. Orr · Robert Thomas · Thomas Orr