About JOHNSON J E
About Virginia Polytechnic Inst. and State Univ., VA, USA
About BURGER J A
About Virginia Polytechnic Inst. and State Univ., VA, USA
About RATHFON R A
About Virginia Polytechnic Inst. and State Univ., VA, USA
About KREH R E
About Virginia Polytechnic Inst. and State Univ., VA, USA
About FERET P P
About Virginia Polytechnic Inst. and State Univ., VA, USA
About Plant and Soil
About Pinus
About Pinus taeda
About Silviculture in general
About Plant nutrition
About リギダマツ
About タエダマツ
About 雑種
About 葉の栄養素