000 00254nam a2200085Ia 4500
008 150310s9999 xx 000 0 und d
100 _aNOTES ON APPLIED SCIENCE NO.21 SWINDETH & EVENS
245 _aMEASUREMENT OF LOW BY ELASTIC DEVICES
260 _c1960
_bH.M.S.O
999 _c4658
_d4658