title: [The fight for existence].
authors.forename: Charlotte
authors.initials: C
authors.lastname: Haug
mesh_terms: D000329:Advertising / Q000191:economics / Q000592:standards; D004345:Drug Industry / Q000191:economics; D004346:Drug Information Services / Q000592:standards; D010506:Periodicals as Topic / Q000191:economics / Q000592:standards