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  1. 2019New_Mesh_Tree_Hierarchy.txt 
    https://www.nlm.nih.gov/.../download/2019New_Mesh_Tree_Hierarchy.txt
    ... Palaeognathae B01.050.150.900.248.600.200 Dromaiidae B01.050.150.900.248.600.750 Rheiformes ... Blood Preservation E02.792.833.230.500 Blood Safety E02.792.833.660 Organ Preservation E02.792. ...
  2. pdfNLM Technical Bulletin, no.33-44 
    https://www.nlm.nih.gov/.../nlmarchives/techbull/33-44-1972.pdf
    ... DUK DUKE U SCH MED..MED CTR LIB EMU EMORY U..A W CALHOUN MED LIB EPC ... on learning EFFECTS of hallucinogens on man ELECTRICAL safety and hazards In the hospital* ELECTROCARDIOGRAPHY, Computer applications ...