(1976). Physical and chemical characteristics of aquatic humus / Egil T. Gjessing.
Cita Chicago (17th ed.)Physical and Chemical Characteristics of Aquatic Humus / Egil T. Gjessing. 1976.
Cita MLA (9th ed.)Physical and Chemical Characteristics of Aquatic Humus / Egil T. Gjessing. 1976.
Atenció: Aquestes cites poden no estar 100% correctes.