The relation of seasonal changes in the δ13C values to freezing tolerance in the needles of Sabina
LI Yuqiang, CHEN Yinping, ZHANG Manxiao, LUO Yongqing, WANG Xiaomei
Ecology and Environment . 2010, (2): 350 -354 .  DOI: 10.16258/j.cnki.1674-5906(2010)02-0350-05

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