@book{46372,
	author = {App,  Frank },
	title = {Farm Economics :},
	publisher = {T. B. Lippincott Company, },
	year = {1928.},
	series = {Lippincott's Farm Manuals},
	address = {Philadelphia :},
	edition = {Second Edition Revised.},
	note = {248 Illustrations In Text
},
	url = {https://fll.law.cu.edu.eg/fulltext/bks/B13-08413.pdf}
}