Gallagher James J. (1969). A summary research in science education for the years of 1968-69. ERIC.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGallagher James J. A Summary Research in Science Education for the Years of 1968-69. Ohio, Estados Unidos: ERIC, 1969.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGallagher James J. A Summary Research in Science Education for the Years of 1968-69. ERIC, 1969.
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