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United States Department of Agriculture

Agricultural Research Service

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Image Number K9434-1

At Stoneleigh Estate in Villanova, Pennsylvania, chemist Philip Pfeffer (left) and microbiologist David Douds inspect a tropical grass planted to produce compost-based inoculum.

Photo by Peggy Greb.

640 pixels wide: (k9434-1.jpg)

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Last Modified: 8/13/2016
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