PW
Philip Whitfield
Books
The biology of parasitism
1979
ISBN 9780713127621
The Illustrated Encyclopedia of Animals
2005
ISBN 9780785819585
Evolution
2000
ISBN 9780028655932
Why do the seasons change? questions on nature's rhythms and cycles
1987
ISBN 9780670818600
Animals A Macmillan Illustrated Encyclopedia
1999
ISBN 9780028654201
Why Do the Seasons Change? Questions on Nature's Rhythms and Cycles Answered by the Natural History Museum
1987
ISBN 9780241121412