000 00274nam a2200121Ia 4500
100 _aRowatt, Robert W
020 _a0 86011 028 1
942 _cBK
245 _aO.H.P. a guide to the use of the overhead projector
260 _c1980
082 _a371.335 Row
300 _a20
999 _c21486
_d21486