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Luther Burbank, his methods and discoveries and their practical application [microform] : prepared from his original field notes covering more than 100,000 experiments made during forty years devoted to plant improvement / with the assistance of the Luther Burbank Society and its entire membership, under the editorial direction of John Whitson and Robert John and Henry Smith Williams ; illustrated with direct color photograph prints produced by a new process devised and perfected for use in these volumes. |
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