000 00415nam a2200121Ia 4500
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100 _awilliams,richard tecwyn,ed.
245 4 _athe biochemistry of vitamin b12,a symposium held at the london school of hygiene and tropical williams,richard tecwyn(ed.)
260 _a1st.ed. | .London Cambridge University
260 _c1955
942 _cBOK
999 _c4310
_d4310