1970 Surveys

rtl-wcfl-7-27-70b
rtl-wcfl-7-27-70a

rtl-wcfl-8-17-70b
rtl-wcfl-8-17-70a

rtl-wcfl-8-24-70b
rtl-wcfl-8-24-70a

rtl-wcfl-6-22-70a
rtl-wcfl-6-22-70b

rtl-wcfl-11-9-70b
rtl-wcfl-11-9-70a

rtl-wcfl-11-16-70b
rtl-wcfl-11-16-70a

rtl-wcfl-12-14-70a
rtl-wcfl-12-14-70b

rtl-wcfl-12_1970a
rtl-wcfl-12_1970b
wcfl