20000 Schriftquellen zur Eisenbahnkunde
A bibliography of British railway history / comp. by George Ottley ; [Hauptbd.]
A bibliography of works in russian on aviation medicine up to 1950
Abstracts of current literature- aerospace medicine and biology
Accuracy of airspeed measurements and flight calibration procedures
Acta SC de propaganda fide Germaniam spectantia : 1622 - 1649
A cumulative index to the 1964 issues of a continuing bibliography on aerospace medicine and biology