TY - GEN ED - British Standards Institution TI - Specification for nitrogen determination apparatus, non-transference micro-Kjeldahl : microchemical apparatus : group B : apparatus for the determination of elements by other than combustion methods T2 - BS 1428 : part B3 : 1964 SN - Compra PY - 0000///[s.n.] CY - London PB - 1964 KW - Análises químicas KW - Azoto KW - A 21 ER -