ISBN: 0721401295.
Reprint, published by Ladybird Books in 1967.
Pictorial paper-covered boards.
50 pages.
Series 654, 'How it works'.
Original price 30p.
Ink blot on front cover.
Covers otherwise in good condition.
Contents clean and unmarked.
Reading condition.
(Ladybird)
Catalogue Number: #101781
Price: £2.00
Sorry - This book has already been sold.