How can I find where a dialect word come from? I often come across words like this in a dictionary:


  肚皮 &lt;方> 腹部; 肚子 (dù·zi)。


I would like to know if there's a way (a website or a dictionary or whatever other way instead of asking someone) where I can search what 方言 the word came from and what is its relevance to putonghua (if it's used at all and its acceptance, etc).
There ARE dialect dictionaries available in this country, for example:
现代汉语方言大词典
But it includes 41(!) volumes and may cost you more than $300.