belt-and-braces

autokey cipher baroclinicity bkgd. bullhorn cross-validated H-filter hawle marine pollution source MWD/MT(HM) (megawatt day/metric ton(of heavy metal polyethylene polyaminopolyacetic acid pope hat sarnaths spagirists starting aids transient-divided reset transversopagus universal asynchronous receiver/transmitter unsubstantiation vacuum-treated steel Vattel Emmerich de