Prolegomenon to further studies in the Chrysococcyx 'Malayanus' group (Aves, Cuculidae)
Leiden: E. J. Brill, 1981. Octavo, two monochrome plates. Publisher's wrappers, a fine copy.
Zoologische Verhandelingen, No.187.
Leiden: E. J. Brill, 1981. Octavo, two monochrome plates. Publisher's wrappers, a fine copy.
Zoologische Verhandelingen, No.187.