Die Regenwälder Amazoniens se hen nur so grün aus: Die üppige Vegetation täuscht darüber hin weg, dass es kaum Boden gibt und schon gar keinen fruchtbaren. Stattdessen wird die Biomasse ständig ...
DR. RAMANN'S treatise on soils, which has grown out of an earlier book on forest soils published in 1895, is of very different type and design from such books on the same subject as have appeared in ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results