Helmet (Musical group) / http://id.loc.gov/authorities/names/n91089018 : Contemporary musicians. Volume 52 : profiles of the people in music / Angela M. Pilchak, project editor
Helmets -- Materials : Sustainable phase change and polymeric water absorbent materials : heat stress reduction in helmets / Sinnappoo Kanesalingam, Rajkishore Nayak
2020
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Helmets -- Materials -- Research -- United States -- 21st century : Review of Department of Defense test protocols for combat helmets / Committee on Review of Test Protocols Used by the DoD to Test Combat Helmets, Board on Army Science and Technology, Division on Engineering and Physical Sciences, National Research Council of the National Academies
2014
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Helmets -- Protection : Protecting warfighters from blast injury / by Lauren Fish and Paul Scharre
2018
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helmets (protective wear) : Casques : Manuel de scurit routire l'intention des dcideurs et des praticiens
Commonly known as parasitic worms, this group includes the ACANTHOCEPHALA; NEMATODA; and PLATYHELMINTHS. Some authors consider certain species of LEECHES that can become temporarily parasitic as helminths