000 00719nam a2200265 i 4500
001 C2-0273470
003 PPAK
005 20180728002822.0
008 060809s2004 enka|||| ||||| | eng d
020 _a0749644990
040 _aPPAK
_beng
_cPPAK
_erda
082 0 4 _a507
_223
090 0 0 _a507
_bMAD
_dRK
100 1 _aMaddison, Simon,
_eauthor
245 1 0 _aTelecoms
264 1 _aLondon :
_bFranklin Watts ,
_c2004
300 _a44 pages :
_bcolour illustrations ;
_c28 cm
336 _2rdacontent
_atext
337 _2rdamedia
_aunmediated
338 _2rdacarrier
_avolume
490 1 _a21st century science
650 1 0 _aScience - Study and teaching.
830 0 _a21st century science
942 _ddc
_cB
999 _c81382
_d81382