00366nam a2200121Ia 4500008004100000040001700041041001200058082001700070100002000087245007600107260004800183300001300231230917s9999||||xx |||||||||||||| ||und||  e122547aMAIN  aEnglish  a509.51 N289S  aNeedham, Joseph 0aScience and civilisation in China Vol 4 Physics and physical technology  aCambridgebCambridge University Pressc1971  a931p. p.