Sentence： Would you please put the book where it belongs？
Q： I tried to disassemble the sentence to understand what "where" looks like. (see as bellow)
(1) Would you please put the book at the place.
(2) The book belongs at the place.
so, "where" = "at the place" = "at which"
Am I right？
ref. Grammar book.
(a) Where = in/at/on which
(b) And follow the example：
(1) This is the place.
(2) I was born in the place.
(1) + (2) = This is the place where I was born.
so, "where" = "in which"