(idiomatic) The practice of donating old used books that burden rather than assist communities.
1993 Bernth Lindfors, "Desert Gold: Irrigation Scemes for Ending the Book Drought," in D. Riemenschneider and F. Shultze-Engler, eds. African Literatures in the Eighties, Rodopi, Amsterdam, 1993. p. 36
...there is some sensitivity in Africa to being the recipient of the West's unwanted or secondhand surplus goods, and sometimes well-intentioned gifts of educational materials have been criticized by their recipients as examples of "book dumping" - equivalent, that is, to garbage disposal or to the removal to Africa of European and American toxic wastes.
Many book donation programs, though well-intentioned, engage in “book dumping,” a practice of shipping old used books that burden rather than assist communities.
... the unfortunate reality for much of the developing world has been that a combination of book dumping, poverty and underfunding of libraries has severely limited the ability of librarians to collect relevant, high-quality resources (Sturges, 2014; Edem, 2010; Otike, 1993).