Soil Carbon Dynamics in Corn-Based Agroecosystems: Results from Carbon-13 Natural Abundance Collins et al. Soil Sci Soc Am J.1999; 63: 584-591 http://soil.scijournals.org/cgi/reprint/63/3/584
Carbon Isotope Ratios of Great Plains Soils and in Wheat-Fallow Systems Soil Sci Soc Am J 61:1068-1077 (1997) http://soil.scijournals.org/cgi/content/abstract/61/4/1068?maxtoshow=&HITS=10&hits=10&RESULTFORMAT=&andorexacttitle=and&andorexacttitleabs=and&andorexactfulltext=and&searchid=1&FIRSTINDEX=0&sortspec=relevance&volume=61&firstpage=1068&resourcetype=HWCIT
迎国庆送壕礼！十月发帖抢大疆云台
【官方邀请】高效液相色谱使用情况有奖调研
喜迎国庆！第十七届原创大赛超级原创日参赛奖励翻倍
丹纳赫四十周年寄语征集领大礼包
