1) The nitrifying efficiency of certain Colorado soils

Author
Sackett, Walter G
Series
Bulletin volume 193
Publisher
Agricultural Experiment Station of the Agricultural College of Colorado
Pub. Date
1914.
Language
English

2) The ammonifying efficiency of certain Colorado soils

Author
Sackett, Walter G
Series
Bulletin volume 184
Publisher
Agricultural Experiment Station of the Agricultural College of Colorado
Pub. Date
1912.
Language
English