00723nam a2200193Ia 4500 0 0 0 0 RIEBPL RIEBPL 2019-07-10 0 43270 2019-07-10 00:00:00 2019-07-10 BK 15400 15400 20191121150131.0 190710s9999 xx 000 0 und d 086184-112-3 eng 371.39445 Council for Educational Technology Supported self study in secondary education : report of an investigation London : Council for Educational Technology, 1983 98p. CET working paper series council for education technology Independent study | Education management | Education possibilities | Education sources | Secondary school education | Technology education BK