"The material contained in this volume originally appeared under the Air Publication references 2453 ("Airborne Forces Manual"), 2453A ("Carriage and Dropping of Paratroops and Equipment") and 2453D ("Carriage of Equipment") ... produced for official use and internal purposes by the Air Ministry"--title page verso.
RAF airborne forces manual : the official 'Air Publications' for RAF paratroop aircraft and gliders, 1942-1946. ISBN 0853681635. Published by Arms and Armour Press in 1979. Publication and catalogue information, links to buy online and reader comments.