Christopher Helm (Publishers) Ltd
Christopher Helm (Publishers) Ltd was a British publishing firm that produced nature field guides. In 1989 it was bought by A & C Black, and is currently an imprint of Bloomsbury. https://en.wikipedia.org/wiki/A_%26_C_Black https://www.bloomsbury.com/uk/special-interest/natural-history/christopher-helm/
Publisher 1
 | Wildfowl: An Identification Guide To The Ducks, Geese and Swans Of The World | Hardback |
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