Peter Ritchie Ritchie-Calder · R. C. · Ritchie-Calder Lord
Peter Lang AG, Internationaler Verlag der Wissenschaften · Spss Inc
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Evolution of the Machine | 978-600-109-396-8 (600-109-396-2) | 1968 |
| The Pollution of the Mediterranean Sea: Pacem in Maribus | 978-3-261-00788-9 (3-261-00788-5) | 1972 |