000 00310nam a2200121Ia 4500
008 251112s9999||||xx |||||||||||||| ||und||
040 _aCNCLSA
245 0 _aNature
_bA Weekly Journal Of Science
260 _c1954
_bMacmillan And Co., Ltd
_aNew York
300 _aP. 617-1200
300 _bV. 175
942 _cJRBV
999 _c18556
_d18556