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Discovery of a new fossil in the nama system southwest africa fossil namalia villiersiensis new genus new species archaeocyatha sponges


, : Discovery of a new fossil in the nama system southwest africa fossil namalia villiersiensis new genus new species archaeocyatha sponges. Nature (London) 219(5149): 53-55


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Anonymous, 1993: New standards governing antibiotic residues in milk. A brief discussion is presented of EC standard 2377/90 and an annexe to it which came into force in 1992 (EEC 675/92). The standard and the annexe both govern permitted levels of antibiotics in milk and methods of determining antibiotic residues.

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