Castro, A., Henríquez, C., & Bertsch, F. (2008). Nitrogen, phosphorus and potassium supply capacity in four organic amendments.
Dyfyniad Arddull ChicagoCastro, Andrina, Carlos Henríquez, y Floria Bertsch. Nitrogen, Phosphorus and Potassium Supply Capacity in Four Organic Amendments. 2008.
Dyfyniad MLACastro, Andrina, Carlos Henríquez, y Floria Bertsch. Nitrogen, Phosphorus and Potassium Supply Capacity in Four Organic Amendments. 2008.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.