UT Velocity Page - Second Sound

Velocity of sound in some Biological Material - Ultrasound physics. Parameters. Differences between X-rays and ultrasound.( Gonzalo Diaz M. M.D.)

Material properties - Krautkrämer

Sound Velocity Tables - longitudinal wave and steel correction factors for most metals and alloys (Radiatronics)

UT Material Properities - Center for Nondestructive Evaluation, Iowa State University, Ames, IA

Seawater Sound Speed Calculator - by Simon Richards.

ISO 9613 - attenuation of sound during propagation outdoors.