/SPECIAL BOBBLEHEADS
strength: break into sherrif lucas simms house in megaton. You'll need a lockpick skill of over 50.
perception:It's in the republic of dave, in the museum of dave.check the bookcase on the right
endurance:look at the table next to the rotting corpse inside the deathclaw sanctuary
charisma:check inside the cloning lab in vault 108
intelligence: have a look at Dr Li's table in the Scuence lab in rivet city and you'll find the head
agility:make sure you've got a good amount of protection as you'll find this head inside a small and highly radioactive office in Greener Pastures Disposal
luck: head to the arlington cemetery north and go into the basement. It's on a shelf under the stairs in the northern house

/SKILL BOBBLEHEADS
barter:Head over to the evergreen mills and go to the market bazaar. find the raider trader who doesnt attack you and look on the shelf behind, where its at the top-right
big guns:in fort constantine, go to the basement of the CO quarters and look inside the wall safe
energy weapons:this ones in raven rock on colonel autumns desk
explosives:its at the WKML radio station head through the door to the sealed sewage tank
lockpick:go to the bethesda ruins and go to the east section . Its on the top floor near the door to the bridge
medicine:when you are 16. check on your fathers desk in vault 101
melee weapons:just before leaving the underchambers in the dunwich building in the bottom left of the whole map look on the floor by the door
repair:this bobblehead is in arefu, in evan kings house. You'll need enough skill to pick an 'average' lock
science:go to the living quarters in vault 106.It's in the left corner, in a room with a brightly lit bookcase. Look at the middle right section of the shelf
small guns:head to the training room of the national guard depot. Walk through it and the offices to the main room. flick the power switch on the left to enter yhe armoury and you'll find it on the shelf
sneak: get to the yao guai tunnels and search a metal box in the den.It's on the right side of the map beside some water
speech:It's on a table in the eulogys pad in paradise falls
unarmed:go west from casey smiths garage in rockpolis. You'll find it by argyles body, under some tattered banners

and thats all of them
Note:if you need help finding the locatians just ask and i can try help you find them