1-3 of 3 Books
The Francis Walker types of Trichoptera in the British Museum
The Francis Walker types of Trichoptera in the British Museum
By Cornelius Betten
Notes on Francis Walker's types of North American flies of the family Tachinidae
Notes on Francis Walker's types of North American flies of the family Tachinidae
By J. M. Aldrich
The Francis Walker types of Trichoptera in the British Museum, re-described and figured by Cornelius Betten and Martin E. Mosely
The Francis Walker types of Trichoptera in the British Museum, re-described and figured by Cornelius Betten and Martin E. Mosely
By Cornelius Betten