TY - Generic T1 - The nutritional status of Picea abies (L.) Karst. across Europe, and implications for "forest decline". Y1 - 1990 A1 - Cape, J.N A1 - Freer-Smith, P.H. A1 - Paterson, I.S. A1 - Parkinson, J.A. A1 - Wolfenden, J. JF - Trees VL - 4 IS - 4 ER -