Korhonen Corporate Client List
Houghton Mifflin Company (Now Houghton Mifflin Harcourt), GTE/VERIZON, Polycom, VTEL, SpectraLink (now Polycom), and Cisco Systems
Houghton Mifflin Company (Now Houghton Mifflin Harcourt), GTE/VERIZON, Polycom, VTEL, SpectraLink (now Polycom), and Cisco Systems
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