Não informado. Report on the Botanic Gardens and Their Work. Department of Science and Agriculture.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Report on the Botanic Gardens and Their Work. Georgetown: Department of Science and Agriculture.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Report on the Botanic Gardens and Their Work. Department of Science and Agriculture.
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