Can I get a list of assets with script?

I'd like to get a list of the assets (in this particular case, meshes) in my assets folder (and/or subfolder(s)). Can this be done? I looked at the docs for AssetDatabase.LoadAllAssetsAtPath but that doesn't look right for me. It would really be like a directory I suppose. If I were to use System calls, would that map to LoadAssetAtPath?