Bibliografía (28 obras)
Life below Zero
2018
The Allergy Bible
2005
Allergy Bible
2001
Life in prehistoric times
1997
Trees
Majestic mountains
Mysteries of the rain forest
1996
Evolution
1993
Trees and Shrubs (Tracker Nature Guide S.)
1001 Wunder der Tierwelt. ( Ab 10 J.). Fragen und Antworten.
1991
Le monde des sciences
Let's explore the plant world
1990
The Plant World (Let's Explore)
Kingfisher Book of 1001 Questions and Answers (Question & Answer Books)
The World of Deer
The human body (Today's world)
1988
Origins of life
The deer in the forest
The human race
The human race (Today's world)
Life on earth (Today's world)
The human body
Life on earth
The Evolution of life
1986
1985
Living monsters
1978
Evrim
