Published by Air Ministry, 1944
Seller: Scrivener's Books and Bookbinding, Derbyshire, United Kingdom
Soft cover. Condition: Good. Green soft covers, pages punched and held together with laces, 107pp, b&w graphs and charts, 'Effect of Visibility on Map Reading' circular paper map slipped in between pages, covers are grubby and corners curled, however pages are clean and bright.