TY  - SER
AU  - Khider,M.H.
AU  - Abdalla,A.M.
AU  - Abdel-Gaffar,M.K.
TI  - Determination of potassium extraction free energy of some soils in Egypt
KW  - Agriculture and energy
KW  - Soils
KW  - Egypt
KW  - Potassium content
N1  - Includes references
N2  - Eight surface soil samples (0-30 cm) were selected from different sites of Egypt to determine the free energy of extracted K amounts
UR  - http://nile.enal.sci.eg/EALE/2008/MJAR/3308/5/1237.pdf
ER  -