00353cam a22000977a 4500008004000000082001500040245008800055260005000143300000900193700005300202180718b1972   xxu||||| |||| 00| 0 eng d  aW6x42 Un3c  aCivil aviation policy guidancecby Department of Trade and Industry, United Kingdom  aLondonbHer Majesty's Stationery Officec1972  a8+p.  aUnited Kingdom. Department of Trade and Industry