00280nam a2200097Ia 4500008004100000040002500041082001500066100002400081245003700105260004000142240215s9999    xx            000 0 und d  aNORSU-DumcNORSU-Dum  a658.45/V42  aVardaman, George T. 0aEffective Communication of Ideas  bVan Nostrand Reinhold Companyc1970