APA

Tamm C. O., Hallbäcken L., . (1986). Changes in soil pH over a 50-year period under different forest canopies in SW Sweden. : Water, air and soil pollution.

Chicago

Tamm Carl Olof, Hallbäcken Leif, . 1986. Changes in soil pH over a 50-year period under different forest canopies in SW Sweden. : Water, air and soil pollution.

Harvard

Tamm C. O., Hallbäcken L., . (1986). Changes in soil pH over a 50-year period under different forest canopies in SW Sweden. : Water, air and soil pollution.

MLA

Tamm Carl Olof, Hallbäcken Leif, . Changes in soil pH over a 50-year period under different forest canopies in SW Sweden. : Water, air and soil pollution. 1986.