Surge, Donna M., and Karen J. Walker (2006) Geochemical Variation in Microstructural Shell Layers of the Southern Quahog (Mercenaria campechiensis): Implications for Reconstructing Seasonality.
…………………………………………………………………………………………………………. यो मुलुक सिंगापुर जस्तो बनिसकेको छैन मात्र राजनीतिक परिवर्तन...