hes in sagenham town (the town next to twinleaf town) in the big builing
150 then talk to Professor Rowen.
in his lab in sadgem town
you get it from professer rowen
Sandgem town.
By seeing all the Pokemon in sinnoh and going to rowen's lab.
He will be in hearthome city
you have to see all of the Pokemon and then you get the national pokedex from Prof. Rowen and Prof. Oak in Prof. rowen's lab after completeing the Sinnoh pokedex.
Complete the Sinnoh dex then go to professor rowen for it professor oak, he will enter the room and give you it.
no,you get them from professor rowen or oak if that's not right find someone who might know,or check another website. you could win one if you get 1st in the lottery.
Professor Rowan isn't in Soul silver
I believe you have to beat Byron, the city Gym Leaver. If not that, I suggest you Google a walkthrough for it.
No.