id author title date pages extension mime words sentence flesch summary cache txt crl-13533 Duda, Frederick Columbia's Two-Track System 1980-07-01 10 .pdf application/pdf 6531 295 41 One variation would be to classify professional librarians on some kind of scale which would allow for promo- tion without administrative responsibility and would reward distinguished service to students and faculty and to learning at large . Since there are mechanisms for modifying the system of ranks and since there are indications that the original objectives of recognizing profes- sional accomplishments within the context of library program and service objectives are being met, it is clear that the system of ranks will remain an integral aspect of Co- lumbia's program for professional librarians . cache/crl-13533.pdf txt/crl-13533.txt