Working for a living : physiological and behavioural trade-offs in birds facing hard work /
Wiersma, Popko.
Rijksuniversiteit te Groningen.
[Groningen? : Rijksuniversiteit Groningen?,
2003?]
One sheet ([1]) leaf) with main points of thesis in Dutch, and 1 invitation to the launch of the thesis, in the form of a bookmark, inserted.
Thesis (doctoral)--Rijksuniversiteit Groningen, 2003.
Includes bibliographical references (p. 155-169).
Birds