Air defenses -- Congresses : Emerging threats, force structures, and the role of air power in Korea / edited by Natalie W. Crawford, Chung-in Moon
2000
1
Air defenses -- Equipment and supplies. : Civil defence : a practical manual presenting with working drawings the methods required for adequate protection against aerial attack / by C.W. Glover
Air defenses -- Great Britain -- World War II : Training of instructors (L.A.R.P.) : and training of A.R.P. personnel and members of the public in elementary methods of protection against high explosive bombs and incendiary bomb control / Home Office, Air raid precautions department
1939
1
Air defenses -- Handbooks, manuals, etc. : A.R.P. : air raid precautions for Australians, H.E. - fires - gas : the civilians' guide : what to do before, during and after an air raid
Australia -- Air defenses, Military -- Congresses : The future of tactical airpower in the defence of Australia : proceedings of a conference organised by the Strategic and Defence Studies Centre, the Australian National University, November 1976 / edited by Desmond Ball
Air defenses -- Technological innovations : Countering small uncrewed aerial systems : air defense by and for the joint force / Shaan Shaikh, Tom Karako, Michelle McLoughlin
2023
1
Air defenses -- Ukraine : Putin's missile war : Russia's strike campaign in Ukraine / Ian Williams
Air ducts -- Standards. : Holmes on Homes: Drafty Ducting - Series 2, Ep 3 of 13 / Director: McNeil, Scott Clark
2003
1
Air -- Early works to 1800. : Experiments and observations on different kinds of air : and other branches of natural philosophy, connected with the subject. / Birmingham, Printed by Thomas Pearson, 1790
Air -- Environmental aspects -- Pollution : Atmosphere-Biosphere Interactions : Toward a Better Understanding of the Ecological Consequences of Fossil Fuel Combustion
Any substance in the air which could, if present in high enough concentration, harm humans, animals, vegetation or materials. Substances include GASES; PARTICULATE MATTER; and volatile ORGANIC CHEMICALS