Dr. Stephanie Cave wrote a book titled something like "What your Pediatrician will not tell you about immunizations". That isn't the exact title but google her name and you will probably get the book.
There are lots of other posts on this topic - you may want to search for them.
I know not everyone subscribes to the vaccination theory, but I do to a certain extent. I have to write a paper in regards to every day science and how we use it to make decisions in our own lives. One of the possible topics was childhood innoculations. With my experiences I could go on forever about that one so it was an easy choice about which topic to write about! Anyways, my point here...does anyone know of any good/reliable resources concerning splitting or spacing vaccinations?