 It is for his work there defending the new techniques of quantitative social science to questions of librarianship that he is best known.His classic articulation of these ideas is his 1933 book, "An Introduction to Library Science" (University of Chicago Press), the title of which introduced the idea of librarianship as a science.Among his best known students are Lester Asheim, Arna Bontemps, Rudolf Hirsch, Haynes McMullen, Jesse Shera, and Raynard Swank.