TY  - RPRT
TI  - Field method for the determination of zinc in soils
AU  - Rollin Elbert Stevens
AU  - Hy Almond
PY  - 1949
DO  - 10.2113/gsecongeo.44.4.296
UR  - https://pubs.usgs.gov/publication/70215460
ID  - 70215460
ER  -