1. Mobilising positive reinforcement to reduce youth access to tobacco. Issue 1 (1st March 1995) Authors: Biglan, A.; Henderson, J.; Humphrey, D.; Yasui, M.; Whisman, R.; Black, C.; James, L. Journal: Tobacco control Issue: Volume 4:Issue 1(1995) Page Start: 42 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗