Economics Research Associates & Spokane Centennial Association. (1970). Plan and feasibility of proposed Spokane ecology exposition.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEconomics Research Associates और Spokane Centennial Association. Plan and Feasibility of Proposed Spokane Ecology Exposition. Los Angeles, 1970.
एमएलए (8वां संस्करण) प्रशस्ति पत्रEconomics Research Associates और Spokane Centennial Association. Plan and Feasibility of Proposed Spokane Ecology Exposition. 1970.
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