(2024). Variation in cone, seed and seedling characteristics. NFLIC.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVariation in Cone, Seed and Seedling Characteristics. NFLIC, 2024.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVariation in Cone, Seed and Seedling Characteristics. NFLIC, 2024.
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