(Zh 1 )
[Enclosure in Circular despatch dated 3rd May, 1930.]
AIR SERVICES.
(a) Returns of Aircraft arriving and departing.
(b) Air Transport Services.
(c) Air Ports (sea-plane bases and aerodromes).
(d) Licences and Certificates.
(e) Imports and Exports by Air.
Section 35.
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