81.   They say that land used to grow coca leaves is especially threatened by the law.

82.   Under pressure from the United States, Bolivia has been cracking down on the sale of coca leaf, from which cocaine is processed.

83.   Under pressure from the United States, Bolivia has been cracking down on the sale of coca leaf from which small amounts of cocaine may be extracted.

84.   Nevertheless, he conceded, the coca leaves were essential for the production of cocaine.