That was the date of the establishment of Convention No. 159 and Recommendations Nos. 99 and 100.These instruments provide bases for a national policy in the different countries for the rehabilitation and employment of disabled persons.
这是订立第159号公约和第99号和100号建议的日期。 这些文书为不同国家制定残疾人康复和就业国家政策提供了基础。