出版物价值与时效性关系—报纸期刊书籍之比较■宋梅每门学科发展总是先有实践而后才有理论，有人做，有人仿效有人抵制，就有人评价或喝采或批评。先有成功的经验与失败的教训，其后才有理性认识即规律性科学积累。对实践的这种理性认识，在报纸、期刊、书籍诸种出版物比... Publication Value and Timeliness - Comparison of Newspapers and Periodicals Books ■ SONG Mei Every subject has its own theory and practice before its development. Someone does it. Someone imitates someone’s boycott. Someone evaluates or applauds or criticizes. The first successful experience and failure of lessons learned, then only a rational understanding that scientific accumulation of regularity. This rational understanding of practice, in newspapers, periodicals, books, various publications than ...