Potential use of ultrasound in chemical monitoring /

"Cooperative agreement no. CR818353."

Airborne ultrasound : measurement and possible adverse effects /

Mode of access: Internet.

Evaluation of Ohmic Instrument Company model UPM-30 ultrasound power meter /

Mode of access: Internet.

Considerations underlying the use of ultrasound to detect gallstones and foreign bodies in tissue.

AD 657 255.

Nouveau manuel complet du terrassier et de l'entrepreneur de terrassements : contenant une analyse complète des différents modes de transport, l'organisation des chantiers, les extractions de roches et les excavations souterraines et a ciel ouvert /

Mode of access: Internet.