MIL-STD-1311Revision B Change Notice 4Test Methods for Electron TubesLoading PDF document...This may take a momentDocument Revisions (7)Revision Revision B Change Notice 4 (selected)Revision Revision B Change Notice 3Revision Revision C Notice 1 - ValidationRevision Revision DRevision Revision CRevision Revision D Notice 2 - ValidationRevision Revision D Notice 1 - Validation💬