000 00297nam a2200133Ia 4500
008 160316s1956 xxu||||| |||| 00| 0 eng d
020 _a
100 _aE.J.Underwood
245 _aTrace Elements
250 _a1st
260 _aNEW YORK
_bACADEMIC PRESS INC.
_c1956
300 _a430
700 _a
_a
999 _c31771
_d31771