000
002780000a22001450004500
869
_a
1997
_v
14
_n
1-3
869
_a
1998
_v
15
_n
1
222
_a
GEC journal of technology
022
_a
505
_a
500
_a
260
_a
great badow (U.K.)
852
_a
BAO
260
_b
999
_c
22264
_d
22264