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- [5] Free print and non-commercial publishing since 1700 PAPERS OF THE BIBLIOGRAPHICAL SOCIETY OF AMERICA, 2001, 95 (01): : 139 - 140
- [9] NON-COMMERCIAL DRUGS PROCEEDINGS OF THE ROYAL SOCIETY OF MEDICINE-LONDON, 1977, 70 (01): : 1 - 1
- [10] Commercial and non-commercial 'championing' of medications AUSTRALIAN AND NEW ZEALAND JOURNAL OF PSYCHIATRY, 2010, 44 (06): : 585 - 585