Baerbel Hoelldampf

Mineral element composition of declining and healthy stands of red spruce in western Massachusetts

A. Barker, Gretchen C. Smith, Baerbel Hoelldampf, 1993 .

Effects of ammonium on elemental nutrition of red spruce and indicator plants grown in acid soil

A. Barker, Baerbel Hoelldampf, 1993 .