00313    a2200109   4500020001500000082001300015100001400028245005000042260004700092300002200139650004200161  a0710016913  a796bKNA  aKnapp, B.  aSkill in sportbthe attainment of proficiency  aLondonbRoutledge & kegan paulc1963g1963  axii, 204p.c22cm.  aATHLETIC AND OUTDOOR SPORTS AND GAMES