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- [1] UREOLYSIS IMMOBILIZATION AND NITRIFICATION IN BLACK SPRUCE (PICEA MARIANA MILL) HUMUS [J]. SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS, 1966, 30 (02): : 201 - &
- [2] UREOLYTIC MICROFLORA IN A BLACK SPRUCE (PICEA MARIANA MILL) HUMUS [J]. SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS, 1967, 31 (01): : 76 - &