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المؤلفون: Sabine Valley Pecan Nurseries,
المساهمون: Odom, R. L., Odom, W. T.,, Thompson, A. E.,, Henry G. Gilbert Nursery and Seed Trade Catalog Collection.
الإتاحة: http://data.europeana.eu/aggregation/europeana/08711/https___www_biodiversitylibrary_org_item_243833