@book{3228,
	author = {Rania Anwar Zaki and Abdelaziz Mahmoud Salama , },
	title = {Microbial transformaton of diosgenin and progesterone for the production of some steroidal drug hormones / },
	publisher = {Rania Anwar Zaki , },
	year = {2007},
	address = {Cairo : },
	url = {http://172.23.153.220/th.pdf}
}