细节
Johannes Gerardus Keulemans (1842-1912)
White-Spotted Blue-Throat
signed with initials 'JGK'; pencil and watercolour
6 x 9in.
White-Spotted Blue-Throat
signed with initials 'JGK'; pencil and watercolour
6 x 9in.
出版
Lord Lilford, Coloured Figures of the Birds of the British Islands,, 1885-98, III, pl. 6