下面句子中的one指代什么?

题目

下面句子中的one指代什么?
In the following pages,I shall demonstrate that there is a psychological technique which makes it possible to interpret dreams,and that on the application of this technique,every dream will reveal itself as a psychological structure,full of significance,and one which may be assigned to a specific place in the psychic activities of the waking state.

答案

dream