Christianson, Elin B., Paraprofessional and nonprofessional staff in special libraries / Elin Christianson. - New York : Special Libraries Association, 1973. - vi, 70 pages ; 28 cm. - Special Libraries Association. SLA state-of-the-art review no.2. . ISBN: 0871112183 Subjects--Topical Terms: Library employees.Libraries, Special.