000 00240nam a2200085Ia 4500
008 140208s9999 xx 000 0 und d
245 _aNature v.244 July-Aug.,1973 (Transfer to CPRIC Modipuram library)
_c
260 _b
_a
_c1973
942 _2udc
_cP
999 _c13263
_d13263