Where does “библиотечный” come from?

библиотечный (Russian) comes from Russian библиоте́ка, from Latin bibliothēca, from Ancient Greek βιβλιοθήκη, from Ancient Greek -θήκη, from Ancient Greek θήκη, from Ancient Greek τίθημι, from Proto-Indo-European dʰeh₁- — to do, put, place.

библиотечный (Russian): library

Definitions

library

Ancestry of “библиотечный”, step by step

Step	Language	Word	Meaning
1	Russian	библиоте́ка	library in all senses
2	Latin	bibliothēca	a library room for books or collection of books
3	Ancient Greek	βιβλιοθήκη	bookcase; library; records office
4	Ancient Greek	-θήκη	deverbal suffix, typically indicating a space in which things are put or stored
5	Ancient Greek	θήκη	box, chest; grave, tomb; sword sheath
6	Ancient Greek	τίθημι	I put, place, set; I make, cause to be; I make
7	Proto-Indo-European	dʰeh₁-	to do, put, place

Every word from Proto-Indo-European dʰeh₁- →Every word from Ancient Greek τίθημι →Every word from Ancient Greek θήκη →