A study of phosphorus penetration and availability in soils

[1] BARTHOLOMEW R. P., 1928, JOUR AMER SOC AGRON, V20, P913

[2] BROWN BA, 1933, STORRS AGR EXP STA B, V186

[3] CONNER SD, 1930, AM FERT, V72, P16

[4] CRAWLEY JT, 1902, J AM CHEM SOC, V24, P1114

[5] FRAPS GS, 1922, TEX AGR EXP STA B, V304

[6] FUDGE JF, 1928, ALA AGR EXP STA B, V227

[7] GAARDNER T, 1931, KJEMI BERGVESEN, V11, P58

[8] MIDGLEY A. R., 1931, JOUR AMER SOC AGRON, V23, P788

[9] MOOERS CA, 1931, TENNESSEE STA CIRC, V34

[10] NOLL CF, 1930, PENNA STATE COL EXP, V252

[1] BARTHOLOMEW R. P., 1928, JOUR AMER SOC AGRON, V20, P913

[2] BROWN BA, 1933, STORRS AGR EXP STA B, V186

[3] CONNER SD, 1930, AM FERT, V72, P16

[4] CRAWLEY JT, 1902, J AM CHEM SOC, V24, P1114

[5] FRAPS GS, 1922, TEX AGR EXP STA B, V304

[6] FUDGE JF, 1928, ALA AGR EXP STA B, V227

[7] GAARDNER T, 1931, KJEMI BERGVESEN, V11, P58

[8] MIDGLEY A. R., 1931, JOUR AMER SOC AGRON, V23, P788

[9] MOOERS CA, 1931, TENNESSEE STA CIRC, V34

[10] NOLL CF, 1930, PENNA STATE COL EXP, V252