| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Butterflies of the Himalaya | 978-90-6193-545-2 (90-6193-545-8) | 1986 |
| Ecology and Biogeography of High Altitude Insects | 978-90-6193-114-0 (90-6193-114-2) | 1968 |
| Ecology and Phytogeography of High Altitude Plants of the Northwest Himalaya | 978-0-412-15710-3 (0-412-15710-1) | 1979 |