000 00327nam a2200121Ia 4500
008 211214s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aRichards, I A
245 0 _aSpeculative instruments
260 _bRoutledge & Kegan Paul
_aLondon
_c1955
300 _axii,216p p.
942 _c1
999 _c55882
_d55882