@inbook {28259,
	title = {Concepts of diseases and their transmission in populations.},
	booktitle = { Manual for teaching basic veterinary epidemiololgy. },
	year = {1997},
	publisher = {Instituto Zooprof.Super. WHO/FAO },
	organization = {Instituto Zooprof.Super. WHO/FAO },
	address = {Teramo,},
	attachments = {https://scholar.cu.edu.eg/sites/default/files/hanem/files/cocepts_of_diseases_and_their_yransmission_in_populations.pdf},
	author = {Robinson, A. and M. Refai,}
}
