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0 zone in the earth’s outer atmosphere shields us from the sun’s harmful ultraviolet rays. With the discovery that this ozone is being depleted, comes an alarming projection of increased skin cancer(More)
Two long-term individual feeding experiments (336 and 307 days) were carried out with 52 (experiment I; Black and White dairy cattle) and 22 (experiment II; Yellow cattle) growing bulls. Rations(More)