Ahlström, Lars och Molin, Hans Anders;
Luftrumsbeskrivning i 4 x 8 positioner. Trysunda juli 1980. Airspace Description. Description ´l´espace aérien.
Kalejdoskop, Åhus, 1981. First edition.
Small hardbound 8o - 125 x 170 mm. - with illustrated boards. Not pag. , but 74 pages. Only numbers and small black and white photographic reproductions