In this German story, Mr. Watkin invents a 'noise-swallower' but he soon
finds it causes more problems than it solves!...

In the UK, the book was published under the "Read-Every-Day" imprint of
Blackie & Son. The American version was published by Scholastic in may 1971.
The original German title is:

"Herr Klapp Darf Night Gestort Werden"



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