..............page:2-6+20
..............page:7-10+51
..............page:27-31+36
..............page:61-63+69
Measure of medical book aging
ZHOU Zhi-chao;HOU Sheng-chao;LI Wei;Medical Library of Peking University;Library of Affiliated Tongji Medical School Hospital;Central China University of Science and Technology;
..............page:64-69