000			00318nam a2200145Ia 4500
008			190201s9999 xx 000 0 und d
082			_a623
082			_b893 S5
100			_a"Sonnenberg, G J"
245		0	_aRadar And Electronic Nav
260			_aLondon
260			_bButtrworths
260			_c1978
300			_a376
999			_c23868 _d23868