B. C · Blanche Ch Olschak · Blanche Chr. Olschak · Blanche Christine Olschak
HarperCollins · Swiss Foundation for Alpine Research,Switzerland
| title | ISBN-13 (ISBN-10) | year of publication | |
|---|---|---|---|
| Ancient Bhutan: A Study on Early Buddhism in the Himalayas | 978-3-85515-101-1 (3-85515-101-6) | 1979 | |
| Bhutan: Land of Hidden Treasures | 978-0-04-915016-4 (0-04-915016-2) | 1971 |