 
			两种测定风化煤与土壤腐殖酸含量方法的比较
Comparison of Two Kinds of Methods on Humic Acids in Weathered Coal and Soils
| {{custom_ref.label}} | {{custom_citation.content}} 
											{{custom_citation.annotation}}
										 | 
/
| 〈 |  | 〉 |