The Seven to the Rescue
Book 5 of 9 in this category 
Book Details...
First edition: 1984
Publisher: Knight Books
Illustrator: Maureen Bradley
Category: Secret Seven Sequels
Genre: Mystery/Adventure
Type: Continuation Books
Publisher: Knight Books
Illustrator: Maureen Bradley
Category: Secret Seven Sequels
Genre: Mystery/Adventure
Type: Continuation Books
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Reprints
Originally published in 1978 by Librairie Hachette as Les Sept et les bulldozers
Author: Evelyne Lallemand
Translated by Anthea Bell
ISBN-10: 0340363932
ISBN-13: 978-0340363935
Brief Summary: Disaster threatens the old people who live at Honeysuckle Cottages——they are to be evicted from their homes to make way for a new road. The Secret Seven eagerly take up the old peoples' cause, but will they be in time to halt the bulldozers and save the cottages?