BS EN 61689:1997 - Ultrasonics. Physiotherapy systems. Performance requirements and methods of measurement in the frequency range 0.5 MHz to 5 MHz Printed version of this is available at library. To request, please e-mail to referencepk@usm.my and include a copy of this record in your e-mail. - (2026-03-18)

BS EN 61580-3:1997 Methods of measurement for waveguides - Part 3 Variation of group delay Printed version of this is available at library. To request, please e-mail to referencepk@usm.my and include a copy of this record in your e-mail. - (2026-03-17)

BS EN 61557-7:1997 Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring ormonitoring of protective measures - Part 7. Phase sequence Printed version of this is available at library. To request, please e-mail to referencepk@usm.my and include a copy of this record in your e-mail. - (2026-03-17)

BS 6288-8:1989 - Magnetic tape sound recording and reproducing systems - Specification for eight-track magnetic tape cartridge for commercial tape records and domestic use Printed version of this is available at library. To request, please e-mail to referencepk@usm.my and include a copy of this record in your e-mail. - (2026-02-24)

BS 5589:1989 - Code of practice for preservation of timber Printed version of this is available at library. To request, please e-mail to referencepk@usm.my and include a copy of this record in your e-mail. - (2025-10-06)