{"source":"book","style":"apa","contributors": [{"function":"author","last":"Grutzmacher","first":"Friedrich"} ],"pubtype": {"main": "pubnonperiodical"},"pubnonperiodical": {"title":"24 Etuden fur Violoncello opus 38 1, 1,","publisher":"Peters","city":"Frankfurt","year":"1983"},"datasource":"/z-wcorg/","datasource":"http://www.worldcat.org","oclc":"313860192"}