Report of the rules of the air and air traffic control division ...
Publisher: International civil aviation organization
Published: 1950
Place of publication: Montreal
Language: eng
Number of pages: 245
Notes: At head of title: RAC division - fourth session, Montreal, 14 November - 14 December 1950.

Official no.: Doc. 7084 RAC/571.

"Foreword" (5 p.) inserted.