000			00296nam a2200121Ia 4500
001			119216
008			170722s9999 xx 000 0 und d
100			_aHoughton, Ps
245			_aGears _bSpur,helical, bevel, internal epicyclic and worm /
250			_a3rd ed.
260			_c1970.
942			_cGEN
999			_c76434 _d76434