00314nam a2200133Ia 4500003000400000008004100004020001400045040000800059100001800067245004700085250001100132260002900143300000800172LDD181029s9999    xx            000 0 und d  a893972185  cLDD  aHarley, James 0aDesigning instructional textcJames Harley  a2nd ed  aLondonbKogan Pagec1985  a175