The National Jurist, a magazine sent to nearly 100,000 law students, ranked the top 50 of the nation's 198 law libraries based on the number of volumes and titles as the biggest factor, followed by the ratio of seating to enrollment.
Librarian-to-student ratio, then accessibility and convenience of the library were also factors.
The University of Iowa topped the chart with 1.2 million volumes, nearly 770,000 titles, 1.1 seats per student and 38.5 students per librarian.
Yale was No. 2, Harvard checked in at No. 8. The 2010 NCAA basketball champion Duke was No. 19. BYU, at No. 25, was just behind the University of Chicago.