100 copies

Only after the last tree has been cut down,
Only after the last river has been poisoned,
Only after the last fish been caught
Will you realise that money cannot be eaten

It's a classic. Today i went to the library and slipped it into 100 finance reference books*. What good will it do? Well, what is the use of a message in a bottle?

*yes, the paper was recycled; no i don't know how damaging laser printing toner is to the environment, but apparently the lowdown can be found here, in a comprehensive 27 page report of the environmental impact of laser printers, and also here, in a readers' digest 11 page review.