Articles

The new stamp from Venezuela. 1982. 5: 3-4.
The Guacharo Cave and Its National Park. 1982. 9: 8-9.
The Guacharo Bird (Steatornis Caripensis, Humboldt). 1982. 9: 10-12.
The Cave Bird. 1983. 11: 4. ( with Jacques Chabert)