Name	Last modified	Size	Description
	Parent Directory		-
	drg.txt	2016-04-22 11:13	26K
	drgdesc.txt	2016-04-22 11:13	41K
	drgnum.txt	2016-04-22 11:13	26K
	mdc.txt	2016-04-22 11:13	1.6K
	mdcdesc.txt	2016-04-22 11:13	2.4K

Apache/2.4.53 (FreeBSD) OpenSSL/1.1.1t-freebsd mod_apreq2-20090110/2.8.0 mod_perl/2.0.12 Perl/v5.34.3 Server at data.nber.org Port 443