000 00271 a2200121 4500
020 _a0862773423
041 _aEn
245 _aCommunication paper 2/B
250 _a2nd ed.
260 _c1990
_aLondon
_bBPP Publishers
_g1990
300 _c29cm.
_axii , 306 p.
942 _cLN
999 _c25990
_d27537