Humic substances in soil and crop sciences : selected readings
MacCarthy, Patrick
Humic substances in soil and crop sciences : selected readings - Madison, Wisconsin : American Society of Agronomy, 1990 - 281 p
10127
Acido humico.
Humus.
Suelos y cultivos.
Suelos--Fertilidad.
631.417 / M3
Humic substances in soil and crop sciences : selected readings - Madison, Wisconsin : American Society of Agronomy, 1990 - 281 p
10127
Acido humico.
Humus.
Suelos y cultivos.
Suelos--Fertilidad.
631.417 / M3
