3160 3870 5859 5893 6304 6406 7143 7162 7606 8229 8268 8275 americanhistory asianhistory china engineering europeanhistory general greatbritain history international) internationalsecurity japan middleeasternhistory militaryhistory modernhistory politicalscience sc700000 sc713000 sc715010 sc715020 sc715060 sc717020 sc717110 sc718010 sc721000 sc722000 sc911080 sc912080 sct29000 security(national socialsciences suco41172 technology theory trades worldwarii