Volume & Issue: Volume 21, Issue 1, August 2014, Pages 1-198 
Effects of chemical fertilization and organic fertilizer on spinach (Spinacia oleracea L.) yield and nitrate accumulation.

Pages 49-68

S. Maryam Fallah Morteza Nezhad; Gholam-Ali Peyvast; Jamal-Ali Olfati; Bahman Sammak