000 00270nam a2200109Ia 4500
008 220201s1975 xx 000 0 eng d
100 _aABBOTT P
245 0 _aTEACHYONRSELF MECHANICS
260 _aLONDON
_bELEMENT OF RADIO SURVEYING
_c1975
300 _a318
942 _2ddc
999 _c89638
_d89638