00406nam a2200157Ia 45000030005000000080041000050400013000460410008000590500016000671000021000832450051001042500007001552600054001623000011002166500021002272307200729s9999||||xx |||||||||||||| ||und||  cCIC-UMAD  aeng  aPE1417bT86  aW. Tayler, Ralph 0aBasic principles of curriculum and instruction  a1a  aEstados UnidosbUniversity of chicago pressc1949  a128 p.  aEnglish language