Abstract
Practical Echocardiology Jos Roelandt, MD (Research Studies Press, Oregon, 1977) pp. xxiii + 306, US$19.95.
Medid Gases-The Properties and Uses W. J. Grant (HM & M Publishers Ltd., Aylesbury, 1978) pp viii + 199, £4.00. £4.00.
Computers in Ultrasonic Diagnostics P. N. T. Wells and J. P. Woodcock (Research Studies Press. 1977) pp. xiv + 94. $14.95.