00278nam a2200109 a 4500008004100000050001600041100001800057245004400075250001200119260002800131350000900159120416s1960    ||||||||||||||||| ||    u  aLC 4661 Tan  aTansley, A. E14aThe Education of slow learning children  a2nd ed.  aLondonbRoutledgec1960  a0.00