Kirk, W. A Colour Guide to the Pollen Loads of the Honey Bee. 2nd. Ed. Pub. IBRA. 2006
pp.54 with a key of 500 colours. 8vo. Softback. New copy.
Highly recommended. This work describes the pollen loads of 268 plant species found in Europe.
£24.95 [Ref: 52416]