TY - BOOK ID - 138328455 TI - Instructional television : status and directions AU - Ackerman, Jerrold AU - Lipsitz, Lawrence PY - 1977 SN - 087778096X PB - Englewood Cliffs (N.J.): Educational technology DB - UniCat KW - Television in education UR - https://www.unicat.be/uniCat?func=search&query=sysid:138328455 AB - ER -