The mild Bølling–Allerød interstadials began c. 13 000, and ended between 12 800 and 12 300 years bp (Brauer (2002) Quat. Int. 88). In Britain the Bølling is not usually distinguished from the Allerød.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。