TY - JOUR AN - 062014871 PY - 1988/01/01 TI - The seasonal variation of 20 elements in 1st and 2nd year needles of Norway spruce,Picea abies(L.) Karst JO - Trees VL - 2 IS - 1 SP - 52 EP - 64 UR - https://eurekamag.com/research/062/014/062014871.php ER -