Question

Ever since the landmark works of ________ and _________, criminologists have realized that crimes tend to concentrate in certain areas

Answer 1

Ever since the landmark works of Edwin H. Sutherland and Donald R. Cressey, criminologists have realized that crimes tend to concentrate in certain areas.
Edwin H. Sutherland and Donald R. Cressey wrote a book about crimes named “Principles of criminology”. First edition of this book was published in 1934.