, , , , . , , .
. , , - . , . , , , , - , .
, , , . , . 20.4. . , , . , .
20.4.
, . - - . , , 250 . (165 . 1985 .). 50% . 19% , 29 . . 1985 ., . , , , . 35 . . , , , , , . 600 , 5000 , . 800 .
: E. T. Smith, How the Post Office Is Bracing for the Deluge Ahead, Business Week, November 3, 1986, p.140.
. . , .