The problem of noise in civil aircraft and the possibilities of its elimination
Roentgenuntersuchungen im technischen Grossbetrieb
PRESSURE TESTING 1000 lb per sq in (Hydraulic)
PRESSURE TESTING 2500 lb per sq in (Hydraulic)
PRESSURE TESTING 200 lb per sq in (Hydraulic)
Statistical Analysis of the Time and Fatigue Strength of Aircraft Wing Structures
Analysis and testing of coal in relation to its properties and utilisation
Technical quality control of aircraft parts by radiography