00302nam a2200109Ia 450000500170000000800410001708200140005810000180007224500570009026000370014730000080018420260224040957.0260224s9999||||xx |||||||||||||| ||und||  a631.4 WHI  aWhiote, R.E.  0aPrinciples and practice of soil science, 4th edition  aUSA: Balckwell Publishers c2006  a363