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科技期刊是获得科技情报的主要来源,约占全部情报来源的65～75％。因此,许多图书情报单位每年不惜以上万元的经费来订购各种期刊。目前全世界共有科技期刊约四万种,对于一个具体学科来说,与其有关的期刊有多少种呢?这当然不能一概而论。全世界登记注册的学科有2000个,平均每个学科有20种期刊,但是,由于现代科学向综合性发展和学科间的交叉渗透,与一个学科直接和间接相关的期刊有近百种到百余种。这
Sci-tech periodicals are the main sources of scientific and technological intelligence, accounting for about 65-75% of all intelligence sources. Therefore, many library intelligence units do not hesitate to subscribe to various journals each year over the funding of 10,000 yuan. There are currently about 40,000 science and technology journals in the world. How many journals are there for a specific subject? Of course, this can not be generalized. There are 2000 disciplines registered in the world, with an average of 20 journals per subject. However, due to the comprehensive development of modern science and the cross-disciplinary interdisciplinary, there are nearly 100 types of journals directly and indirectly related to a subject More species. This