TY  - BOOK
TI  - Bibliography on the effect of NH4 on Mg uptage of crops (1967-1957)
T2  - Commonwealth Bureau of Soils;No.1270
U1  - 016:631.416.11 '81.031.811.6:633 1957/67 K7 
PY  - 1968///
CY  - England
PB  - Commonwealth Bureau of Soils
KW  - Bibliography,Soil science,Magnesium
ER  -