Proceedings of the fourth International Agricultural Aviation Congress, Kingston (Ont.) Canada, 25-29 August 1969.
Subtitle: President: P. H. Southwell. Published for the International Agricultural Aviation Centre, The Hague.
Contributors: International Agricultural Aviation Centre.
Publisher: Pudoc
Published: 1971
Place of publication: Wageningen
Language: eng
Number of pages: 622
Subjects: Aeronautics in agriculture -- Congresses.
Notes: Includes bibliographies.
Summaries in English and French.