Lloyd D. Johnston

National Survey Results on Drug Use from the Monitoring the Future Study, 1975-2003 Vol. 1

National Survey Results on Drug Use from the Monitoring the Future Study, 1975-1995, Secondary School Students

Monitoring the Future: Questionnaire Responses from the Nation's High School Seniors 1993 (Monitoring the Future: Questionnaire Responses from the Nation's High School Seniors)

Monitoring the Future

Monitoring the Future: Questionnaire Responses from the Nation's High School Seniors, 1992 (Monitoring the Future: Questionnaire Responses from the Nation's High School Seniors)

Monitoring the Future: Questionnaire Responses from the Nation's High School Seniors, 1990 (Monitoring the Future: Questionaire Responses from the Nation's High Schoolseniors, 1990)

Monitoring the Future: Questionnaire Responses from the Nation's High School Seniors, 1991 (Monitoring the Future: Questionaire Responses from the Nation's High School Seniors)

Monitoring the Future : Questionnaire Responses from the Nation's High School Seniors, 1992 (Monitoring the Future

Smoking, drinking, and drug use in young adulthood

Handbook of Northwestern plants

Smoking, Drinking, and Drug Use in Young Adulthood

Monitoring the Future, 1986

Monitoring the Future

Monitoring the Future