哪位大神有这2份标准文件的？求分享
标准：19th Communication on testing of plastics, Bundesgesundheitsblatt 14 (1971) 265.
标准： 48th Communication on the testing of plastics, Bundesgesundheitsblatt 25 (1982) 334.
标准：19th Communication on testing of plastics, Bundesgesundheitsblatt 14 (1971) 265.
标准： 48th Communication on the testing of plastics, Bundesgesundheitsblatt 25 (1982) 334.
