TY  - JOUR 
T1  - Investigation the natural radioactivity in local and imported chemical fertilizers
JO  - Brazilian Archives of Biology and Technology
A1  - Hussain, Raad Obid
A1  - Hussain, Hayder Hamza
SN  - 1516-8913
UL  - 10.1590/S1516-89132011000400018
VL  - 54 
Y1  - 2011
PB  - Brasil 
ER  -