But they ran out of white paper, and they replaced it with yellow pages .
This peculiarity in production was unintentional, but it turned out that it soon gained popularity. In fact, it is because of it that today we have the concept of ' yellow pages '. In a relatively short time, telephone listings from all over the world were printed on yellow paper as a rule, regardless of the telephone company that produced them.
So for over a century, these directories were the only reliable way for list of argentina whatsapp phone numbers customers to search for a business or service.
The ubiquity of these brightly-paged booklets should not be taken lightly; they were everywhere. Each of these directories weighed between 1.5kg and 2kg on average, and in the United States, there were 1.7 copies of the Yellow Pages printed for every person; this was equivalent to cutting down 20 million trees a year.
Plus, these huge yellow books once cost a lot of money.
In 2009, the entire yellow pages industry generated revenues of $26 billion, significantly higher than the $21.8 billion generated by Google in 2008.
