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A modification of Douglas and Bremner method for colorimetric estimation of urea

Author:
Praveen-Kumar., Aggarwal, R.K.
Source:
Communications in soil science and plant analysis 1989 v.20 no.19/20 pp. 2171-2176
ISSN:
0010-3624
Subject:
urea, colorimetry, soil analysis, sulfuric acid, phosphoric acid
Agid:
1488176