Subjects: *HISTORY; *SCIENCE & civilization; *CULTURESPAIN; COLOMBIA
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Subjects: *SCIENTIFIC communication; *SCIENCE & civilization; *THERMODYNAMICSSPAIN
Subjects: *SCIENCE & civilization; *EMPIRICISM; *HISTORIOGRAPHYSPAIN; LATIN America; AMERICA
Subjects: *CONFERENCES & conventions; *SCIENCE & the humanities; *SCIENCE & civilizationMADRID (Spain); SPAIN
Subjects: *HISTORY of physics -- 20th century; *PHYSICS research; *SCIENCE & stateSPAINFRANCO, Francisco, 1892-1975