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Various methods of assessing A.I. results in cattle, in particular the N.R. rate, are discussed with reference to figures from the State Institute at Thalheim near Wels in Austria and from the literature. For a statistical analysis it has been calculated that 16, 000.180, 000 inseminations are...

Deutsche Tierarztliche Wochenschrift, 1964, 71, pp 510-518