| http://www.w3.org/ns/prov#value | - A cold storage system for containers of sperm, vaccine and serum or other substances comprising; a cold gas refrigerator having 'a cold head and operating on a reversed Sterling cycle, acompartment surrounding said cold head and having a closable inlet for atmospheric air and an outlet for cooled air, anenclosure to be cooled, a conduit connecting said enclosure to said compartment, a blower locat
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