NITROGEN FOR USE IN AIRCRAFT.
Edition 1986-12-15

DETERMINATION OF NITROGEN BY SCHULTZE-THIEMANN METHOD.
Edition 1972-12-15

DETERMINATION OF NITROGEN BY LUNGE METHOD.
Edition 1957-02-15

COAL. DETERMINATION OF NITROGEN. SEMI-MICRO KJELDAHL METHOD.
Edition 1995-10-24

ANALYSIS METHODS FOR CHOCOLATES. DETERMINATION OF TOTAL NITROGEN. (PROTEINS).
Edition 1974-10-15

LEATHER. DETERMINATION OF NITROGEN CONTENT AND "HIDE SUBSTANCE". TITRIMETRIC METHOD
Edition 1986-01-15

MIXED FEEDS AND RAW MATERIALS. DETERMINATION OF EXTRACTIVE MATTERS NITROGEN FREE.
Edition 1970-10-15

AMBIENT AIR. DETERMINATION OF THE MASS CONCENTRATION OF NITROGEN OXIDES. CHEMILUMINESCENCE METHOD.
Edition 1993-05-19

SOIL QUALITY. DETERMINATION OF NITRATE NITROGEN, AMMONIUM NITROGEN AND TOTAL SOLUBLE NITROGEN IN AIR-DRY SOIL USING CALCIUM CHLORIDE SOLUTION AS EXTRACTANT.
Edition 1999-05-26

STARCHES AND DERIVED PRODUCTS. DETERMINATION OF NITROGEN CONTENT BY THE KJELDAHL METHOD. TITRIMETRIC METHOD. (ISO 3188:1978).
Edition 1995-12-22