Books
1. Objects First with Java book
Don't know if jllortega found a suitable answer but I found a method that works for me on a site I created in my company's Google Apps.
I created an intra-company Google site and tried pdf wrapper, iframe gadget, and code wrapper. Nothing worked; kept getting a "document not supported for viewing" message or some other error.
Here's what worked for me:
1. Uploaded PDF file to Google docs
2. Shared PDF file with selected co-workers
3. Clicked on PDF file
4. Right clicked inside viewer window frame
5. Selected This frame > View frame info
6. Copied the entire URL in the "Address:" line
7. Closed frame info window
8. Inserted Mori's iframe wrapper gadget in my Google site
9. Pasted URL in the "Document/Page URL" box
10. Pressed OK and saved my site
I can now see my uploaded PDF file in the Google docs viewer window