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- [6] CARBON FLOW IN THE RHIZOSPHERE OF PONDEROSA PINE-SEEDLINGS SOIL BIOLOGY & BIOCHEMISTRY, 1990, 22 (04): : 449 - 455
- [8] Effect of competition on genetically improved ponderosa pine seedlings CANADIAN JOURNAL OF FOREST RESEARCH-REVUE CANADIENNE DE RECHERCHE FORESTIERE, 1999, 29 (07): : 940 - 946