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| NITRATES IN WATER, PHOSPHATES IN WATER, IODINE LEVELS IN TABLE SALT, IODINE LEVELS AND GOITER OCCURENCE, NITRATES AND GOITER OCCURENCE, PHOSPHATES AND GOITER OCCURENCE (1) |
| NITRATES IN WATER, PHOSPHATES IN WATER, IODINE LEVELS IN TABLE SALT, IODINE LEVELS AND GOITER OCCURENCE, NITRATES AND GOITER OCCURENCE, PHOSPHATES AND GOITER OCCURENCE (1) |