HOW TO DOWNLOAD MINECRAFT 1.5.2 SERVER EXE AND JAR

HOW TO DOWNLOAD MINECRAFT 1.5.2 SERVER EXE AND JAR. all previous versions are available at assets.minecraft.net official site

Readmore: Download backpacks mod 1.6.4 -1.6.2/1.5.2

just add the key value of the thing you want to the end of the URL.

so- assets.minecraft.net/1_5_2/minecraft.jar
and assets.minecraft.net/1_5_2/minecraft_server.jar 

If you just want to change the version that is downloading when you install/reinstall minecraft.exe:

1.  Go to https://minecraft.net/download
2.  Download current launcher
3.  Open (launch) launcher
4.  Fill in user name and password
5.  When launcher finishes downloading its packages and you've the menu screen----
BEFORE you press play----tap 'EDIT PROFILE'
7.  On menu that pops up, about midway down, you will see 'USE VERSION'
8.  Open the dropdown menu for that request
9.  Tap on the version you want
10. Save profile
11. Now press PLAY

You should have the version you want installed now. 
Website download all mods,skins,... at http://azminecraft.com