Humus chemistry:
Stevenson , F . J
Humus chemistry: genesis , composition , reactions - New York John wiley & sons 1982 - xiii , 443p.
0471092991
Human chemistry
631.417 / STE
Humus chemistry: genesis , composition , reactions - New York John wiley & sons 1982 - xiii , 443p.
0471092991
Human chemistry
631.417 / STE