Mil-s-6721 mil spec single material response
Mil-s-6721 mil spec all material responses or mil-s-5059 mil spec all material responses or mil-s-7720 mil spec all material responses
Mil-s-6721 mil spec 1st material response overall and mil-s-6721 mil spec 2nd material response overall and mil-s-6721 mil spec 3rd material response overall and mil-s-5059 mil spec 4th material response overall
Mil-s-6721 mil spec single material response overall
Mil-s-6721,cond a mil spec single material response overall