More on the obscured ceiling

Link:

http://underlyinglogic.blogspot.com/feeds/1809975820595847323/comments/default

Updated:

09/30/2008, 23:34

From feeds:

Gudgeon and gist » Underlying Logic

Tags:

teaching obscuring the ceiling

Authors:

Erik_Simpson

Date tagged:

03/15/2013, 12:25

Date published:

09/30/2008, 23:07