00649nam a2200217 a 450000100060000000300080000600500170001400800410003102000150007203500190008704000350010604100080014108200240014910000180017324501070019126000320029830000200033050000190035065000230036965000390039249925BD-RjUL20211209075431.0160823s1989    enk           000 0 eng d  a1850918333  a(BD-RjUL)50045  aBD-RjULbengcBD-RjULdBD-RjUL  aeng  a371.3223bRAO 19891 aRace, Philip.14aThe open learning handbook :bselecting, designing and supporting open learning materials /cPhil Race  aLondon :bKogan Page,c1989  a156 p. ;c25 cm  aIncludes index 0aDistance education 0aCorrespondence schools and courses