Body armor -- Materials -- Research -- United States -- 21st century. / https://id.loc.gov/authorities/subjects/sh2002006047 https://id.loc.gov/authorities/subjects/sh2002006405 https://id.loc.gov/authorities/subjects/sh2002006576 https://id.loc.gov/authorities/names/n78095330-781 https://id.loc.gov/authorities/subjects/sh2002012478
Body armor -- United States -- Testing. / https://id.loc.gov/authorities/subjects/sh2002006047 https://id.loc.gov/authorities/names/n78095330-781 https://id.loc.gov/authorities/subjects/sh99005648