Media type: E-Article Title: Foreword Contributor: Heyder, Joachim imprint: Mary Ann Liebert Inc, 1993 Published in: Journal of Aerosol Medicine Language: English DOI: 10.1089/jam.1993.6.2 ISSN: 0894-2684; 1557-9026 Keywords: Pharmacology (medical) ; Pulmonary and Respiratory Medicine Origination: Footnote: