Pramusinto, Warih, 		Haryati, Yuli, AND 		Hapsari, Triana.
" DAMPAK SUBSIDI HARGA PUPUK TSP DAN UREA TERHADAP KONTRIBUSI PRODUKSI JAGUNG JAWA TIMUR PADA PRODUKSI JAGUNG NASIONAL" <em>JSEP (Journal of Social and Agricultural Economics)</em> [Online], Volume 3 Number 3 (1 November 2009)