Sound Velocity Tables - longitudinal wave and steel correction factors for most metals and alloys (Radiatronics) www.radiatronics.com/guide_velocity.htm
UT Material Properities - Center for Nondestructive Evaluation, Iowa State University, Ames, IA www.cnde.iastate.edu/ncce/UT_CC/Sec.7.1/Sec.7.1.html
UT Velocity Page - Second Sound www.xdcr.com/velocity.html#Cryogenic
Velocity of sound in some Biological Material - Ultrasound physics. Parameters. Differences between X-rays and ultrasound.( Gonzalo Diaz M. M.D.) www.drgdiaz.com/tables.shtml#Velocity