12th-century English mathematicians 1970-01-01
167th meridian west 1970-01-01
16,807 1970-01-01
12th-century Greek mathematicians 1970-01-01
131st meridian east 1970-01-01
1/3–2/3 conjecture 1970-01-01
1:350 scale 1970-01-01
136 (number) 1970-01-01
13 (number) 1970-01-01
168 (number) 1970-01-01
13th-century French physicists 1970-01-01
13th-century Greek mathematicians 1970-01-01
13 Things That Don't Make Sense 1970-01-01
13th root 1970-01-01
142nd meridian west 1970-01-01
142 (number) 1970-01-01
143rd meridian west 1970-01-01
1:43 scale 1970-01-01
147th meridian east 1970-01-01
147th meridian west 1970-01-01