摘要：In the last few years there has been a resurgence of field research on gangs. In New York, Los Angeles, San Francisco. Detroit. St. Louis, and elsewhere social scientists have gone "back to the field" to study gangs, drugs, and violence. This has been a welcome development. However, the recent profusion of field research has also brought to light a few problems.
其他摘要：In the last few years there has been a resurgence of field research on gangs. In New York, Los Angeles, San Francisco. Detroit. St. Louis, and elsewhere social scientists have gone "back to the field" to study gangs, drugs, and violence. This has been a welcome development. However, the recent profusion of field research has also brought to light a few problems.
