France-Tabac, 1988, 41, p. 20-32, ISSN.0296-3361 Green manure, intercrops or marker crops. Their interest for tobacco growing SCHMELTZ C.
France-Tabac, 1989, 47, p. 24-5, ISSN.0296-3361 Soil tilling and tobacco quality. A few reminders SCHMELTZ C.
France-Tabac, 1989, 49, p. 26-8, ISSN.0296-3361 Study day on plastic mulching at the Bergerac Tobacco Extension Center SCHMELTZ C.