Quartz crystal units for frequency control and selection - Part 2: Guide to the use of quartz crystal units for frequency control and selection— 44 стр.
Sampling procedures for inspection by attributes. Part 1. Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection— 94 стр.
BS EN 6111. Aerospace series. Ethylene-propylene elastomer (EPM/EPDM) Hardness 80 I RHD for static seal elements in hydraulic systems for long-term application. Material standard— 9 стр.