(Q70549228)
Statements
Walk or jog for health. I. The energy costs of walking or running at different speeds (English)
C. H. Wyndham
N. B. Strydom
C. H. van Graan
A. J. van Rensburg
G. G. Rogers
J. S. Greyson
W. H. van der Walt
1 January 1971
16 January 1971