Washington State University, Washington (State). Department of Agriculture, & United States. Department of Agriculture. Crop protection guide for tree fruits in Washington. Washington State University Extension.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWashington State University, Washington (State). Department of Agriculture, और United States. Department of Agriculture. Crop Protection Guide for Tree Fruits in Washington. Pullman, WA: Washington State University Extension.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWashington State University, et al. Crop Protection Guide for Tree Fruits in Washington. Washington State University Extension.
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