DIN 19684-4:1977-02

Отменен

Methods of soil analysis for water management for agricultural purposes; Chemical laboratory tests; Determination of the total nitrogen content of the soil — 2 стр.

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Ссылочные документы

DIN 19684-2:1977-02

Отменен

Methods of soil analysis for water management for agricultural purposes; Chemical laboratory tests; Determination of the humus content of the soil — 2 стр.

DIN ISO 11261:1997-05

Отменен

Soil quality - Determination of total nitrogen - Modified Kjeldahl method (ISO 11261:1995) — 4 стр.

На этот документ ссылаются

DIN ISO 11261:1997-05

Отменен

Soil quality - Determination of total nitrogen - Modified Kjeldahl method (ISO 11261:1995) — 4 стр.

DIN 4220-1:1987-01

Отменен

Soil survey for land evaluation; field description, classification and survey of test methods — 54 стр.