00375nam a2200121Ia 4500008004100000082002000041100002600061245005100087260004200138300001700180490004200197650001400239140113s9999    xx            000 0 und d  a541.18:549.6 H9  a"Marshall, C. Edmund"  aThe colloid chemistry of the silicate minerals  b"New York : Academic Press Inc, 1949"  a"viii, 195p"  aAgronomy a series of monographs vol.1  aChemistry