|  |  | Airport services manual : Part 3: Bird control and reduction | Bøker | ICAO 8A ICAO /  - Montreal : ICAO, 1978. [Bøker]. - flere pag. (ICAO Doc 9137-AN/898 Part 3)
 | ICAO | 1978 | 
				|  |  | Airport services manual, Part 3 : Bird control and reduction | Bøker | ICAO 8B ICAO /  - Montreal : ICAO, 1991. [Bøker]. - 19 s. (ICAO Doc 9137 Part 3)
 | ICAO | 1991 |