| 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, a compartment'surrounding said cold head and having a 'closable inlet for atmospheric 'air and an outlet for cooled air, an enclosure to be cooled, at conduit-connecting said enclosure to said compartment, a blower l
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