This is a review that concentrates primarily on recent developments in the modification of conventional methods for recovery of injured coliforms and salmonellae; 43 of the 58 references were published in 1975 or later. The review encompasses four areas of activity: (a) most probable numbers procedures, (b) membrane filter procedures, (c) direct plating methods, and (d) the influence of other variables.

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1Journal Paper No. J-9247 of the Iowa Agriculture and Home Economics Experiment Station, Ames, Iowa; Project No. 2018.