???? - ?????? Books - 2021 - ??? SirsiDynix Enterprise https://lib50.npm.edu.tw/client/zh_TW/npm/npm/qf$003dFORMAT$002509Format$002509BOOK$002509Books$0026qf$003dPUBDATE$002509$0025E5$002587$0025BA$0025E7$002589$002588$0025E6$002597$0025A5$0025E6$00259C$00259F$0025092021$0025092021$0026qf$003dSUBJECT$002509$0025E4$0025B8$0025BB$0025E9$0025A1$00258C$002509$0025E7$0025A4$0025BE$0025E6$00259C$002583$0025E5$0025AD$0025B8$002509$0025E7$0025A4$0025BE$0025E6$00259C$002583$0025E5$0025AD$0025B8$0026te$003dILS$0026lm$003dNBK202208$0026ps$003d1000? 2024-06-15T22:16:23Z ?? : ???? : COVID-19???????&#160;COVID-19??????? ent://SD_ILS/0/SD_ILS:237053 2024-06-15T22:16:23Z 2024-06-15T22:16:23Z ???&#160;???, ?<br/>??? :&#160;??????????? : ???????,<br/>???? :&#160;??? : ??????????? : ???????, 2021[?110]<br/>?? :&#160;???????&#160;????&#160;???<br/>???&#160;??<br/> ?? : ???? : ?????????&#160;Soziale Systeme. ??&#160;????????? ent://SD_ILS/0/SD_ILS:236967 2024-06-15T22:16:23Z 2024-06-15T22:16:23Z ???&#160;???, (Luhmann, Niklas, 1927-1998), ?<br/>??? :&#160;???????? ; ???????,<br/>???? :&#160;??? : ???????? ; ??? : ???????, 2021[?110]<br/>?? :&#160;???&#160;?????<br/>???&#160;??<br/>