Base replacement in permutite. I

[71] 1855, J ROY AGR SOC, V15, P491

[72] 1913, INT MITT BODENKUNDE, V3

[73] 1910, CHEM POL, V10, P309

[74] 1875, LANDW JAHRB, V4, P1

[75] 1914, KOLLOID Z, V15, P166

[76] 1916, CHEM Z, V40, P653

[77] 1913, LANDW VERS STAT, V81, P377

[78] 1913, J LANDW, V61, P11

[71] 1855, J ROY AGR SOC, V15, P491

[72] 1913, INT MITT BODENKUNDE, V3

[73] 1910, CHEM POL, V10, P309

[74] 1875, LANDW JAHRB, V4, P1

[75] 1914, KOLLOID Z, V15, P166

[76] 1916, CHEM Z, V40, P653

[77] 1913, LANDW VERS STAT, V81, P377

[78] 1913, J LANDW, V61, P11