The persistent poppy
Subtitle: a computer-aided search for heroin policy
By: Gilbert Levin, Edward B. Roberts, Gary B. Hirsch ; with a foreword by John F. Collins.
Contributors: Roberts, Edward Baer, joint author.; Hirsch, Gary B., joint author.
Publisher: Ballinger Pub. Co.
Published: 1975
Place of publication: Cambridge, Mass
Language: eng
Number of pages: 229
Subjects: Heroin abuse -- United States; Drug control -- United States; System analysis; Computers; Heroin addiction; System analysis; Research design
Notes: Includes bibliographical references and index.