70年代后半期人们开始重视灰色文献。1978年12月在欧洲共同体的主持下,在英国约克郡召开了灰色文献学术讨论会。而日本则在80年代初才开始重视灰色文献。 1 日本灰色文的种类献 (1) 政府资料:是指政府部门为立法,行政活动,或宣传报道而编写的资料,主要有调查报告,审议会报告,各种统计等。而政府出版物中心市销的白皮书除外。 (2) 地方政府资料:是地方政府为其政治行动而编写的资料。 (3) 利用政府资金进行的项目调查,研究报告以及用政府补助金进行的工作报 In the second half of the 1970s, people began to pay attention to the gray literature. In December 1978, under the auspices of the European Community, a gray literature symposium was held in York, England. In Japan, however, gray literature began to be emphasized in the early 1980s. 1 Types of Japanese Gray Texts (1) Government Information: Information written by government departments for legislation, administrative activities, or publicity reports. The main materials are the investigation report, the council report, and various statistics. The government publication of the marketing center except the white paper. (2) Local Government Information: Information prepared by local governments for their political actions. (3) Project surveys, research reports and government grants conducted using government funds