00322nam a2200109Ia 4500008004100000040003800041100001600079245002600095260004500121300001800166653002800184211215s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aChilde, V G 0aSociety and knowledge  bGeorge Allen and Unwin LtdaLondonc1956  axvii, 131p p.  aKnowledge, sociology of