Title: Passive solar heating design
Description: ERROR:  This is messed up !

Title/Subject - passive solar heating, etc.  - but then the contents are linked to "tabellertilbrug00madsgoog" which is Tables to measure  distance used in telegraphs-lines  in  Danish.
Subjects: Solar heating, Passive systems, Chauffage solaire, Systemes passifs, Sonnenenergie