[Biogeochemical provinces poor in iodine, cobalt and molybdenum].
D003035:Cobalt / Q000737:chemistry*; D007455:Iodine / Q000737:chemistry*; D008982:Molybdenum / Q000737:chemistry*; D012987:Soil / Q000737:chemistry*
D012987:Soil; D003035:Cobalt; D008982:Molybdenum; D007455:Iodine
COBALT/chemistry; IODINE/chemistry; MOLYBDENUM/chemistry; SOIL/chemistry