Be a super sleuth with the case of the invisible witness
By: Wolfgang Ecke ; illustrated by Rolf Rettich ; by Stella and Vernon Humphries translated from the German.
Contributors: Rettich, Rolf.
Series: A Pied piper book
Publisher: Methuen Children's
Published: 1980
Place of publication: London
Language: eng
Number of pages: 141
Subjects: Children's literature, German.