Çıtak, S., Sönmez, S., Koçak, F., & Yaşin, S. (2011). EFFECTS OF VERMICOMPOST AND FARMYARD MANURE APPLICATIONS ON SPINACH (Spinacia oleracea var. L.) GROWTH AND SOIL FERTILITY. Horticultural Studies (HortiS), 28, 56-69. http://doi.org/