Aerial surveying equipment -- Helicopters -- Production airplanes of metal
The anderson rotary piston engine
Benefits that warranted Pennsylvania electrification
Present position of heavy-oil and gas engines in Great Britain
Future use of coal in railway motive power
Development of rocket ammunition
Designing and selecting equipment for helicopter-transported drilling rig
Effect of drillpipe rotation on annular frictional pressure loss
Progress report on the API project to develop risk based inspection methodology
Using the hypergeometric model to analyze the buckling of drillstrings in curved boreholes
Cost-effective way to boost production from low pressure fields, using jet pump technology
Drill string safety valve reliability: experimental measurements of actuating torque
New pulsating casing collar to improve cementing quality