Difficult things are difficult to do.

Discovering Yourself was created in 1999.

Discovering the Waterfront was created on 2005-08-16.

Robert D. Shangle has written:

'Discovering California 2002 Wall Calendar'

'Discovering Indiana 2002 Wall Calendar'

'Discovering Oregon 2002 Wall Calendar'

'Discovering The California Missions 2002 Wall Calendar'

'Images of Utah'

'Discovering Colorado 2002 Wall Calendar'

'Discovering Iowa 2002 Wall Calendar'

The lungs is response for discovering the structure of D N A