Bell Telephone Laboratories, inc.

http://www.worldcat.org/oclc/84325563

http://www.worldcat.org/oclc/78821004

http://www.worldcat.org/oclc/83510512

http://www.worldcat.org/oclc/78783384

http://www.worldcat.org/oclc/155861781

http://www.worldcat.org/oclc/78770468

http://www.worldcat.org/oclc/122484133

http://www.worldcat.org/oclc/122491516

http://www.worldcat.org/oclc/78770450

http://www.worldcat.org/oclc/83225997

http://www.worldcat.org/oclc/82628668

http://www.worldcat.org/oclc/34130528

http://www.worldcat.org/oclc/78076042

http://www.worldcat.org/oclc/82743672

http://www.worldcat.org/oclc/78403418

http://www.worldcat.org/oclc/79196986

http://www.worldcat.org/oclc/79715464

http://www.worldcat.org/oclc/77959374

http://www.worldcat.org/oclc/79756910

http://www.worldcat.org/oclc/62423386

http://www.worldcat.org/oclc/82528643

http://www.worldcat.org/oclc/84461656

http://www.worldcat.org/oclc/82628615

http://www.worldcat.org/oclc/81993815

http://www.worldcat.org/oclc/80400203

http://www.worldcat.org/oclc/76937845

http://www.worldcat.org/oclc/81178530

http://www.worldcat.org/oclc/76972617

http://www.worldcat.org/oclc/122459234

http://www.worldcat.org/oclc/63276368

http://www.worldcat.org/oclc/38875089

http://www.worldcat.org/oclc/122630938

http://www.worldcat.org/oclc/84308579

http://www.worldcat.org/oclc/51671949

http://www.worldcat.org/oclc/77679013

http://www.worldcat.org/oclc/83157685

http://www.worldcat.org/oclc/83716287

http://www.worldcat.org/oclc/63276370

http://www.worldcat.org/oclc/79715931

http://www.worldcat.org/oclc/81003959

http://www.worldcat.org/oclc/80490118

http://www.worldcat.org/oclc/122292450

http://www.worldcat.org/oclc/79789849

http://www.worldcat.org/oclc/52607290

http://www.worldcat.org/oclc/82113415

http://www.worldcat.org/oclc/41091886

http://www.worldcat.org/oclc/154305371

http://www.worldcat.org/oclc/154306235

http://www.worldcat.org/oclc/82211232

http://www.worldcat.org/oclc/83026825

http://www.worldcat.org/oclc/84491578

http://www.worldcat.org/oclc/80405142

http://www.worldcat.org/oclc/63282985

http://www.worldcat.org/oclc/41578519

http://www.worldcat.org/oclc/81121499

http://www.worldcat.org/oclc/80362496

http://www.worldcat.org/oclc/63295078

http://www.worldcat.org/oclc/154305926

http://www.worldcat.org/oclc/122608760

http://www.worldcat.org/oclc/84131911

http://www.worldcat.org/oclc/80781600

http://www.worldcat.org/oclc/86145707

http://www.worldcat.org/oclc/81274246

http://www.worldcat.org/oclc/83894272

http://www.worldcat.org/oclc/84042810

http://www.worldcat.org/oclc/465473771

http://www.worldcat.org/oclc/81418133

http://www.worldcat.org/oclc/82798862

http://www.worldcat.org/oclc/122370814

http://www.worldcat.org/oclc/154306668

http://www.worldcat.org/oclc/83770877

http://www.worldcat.org/oclc/173692824

http://www.worldcat.org/oclc/154305672

http://www.worldcat.org/oclc/84447555

http://www.worldcat.org/oclc/63283795

http://www.worldcat.org/oclc/164039114

http://www.worldcat.org/oclc/63282977

http://www.worldcat.org/oclc/81360252

http://www.worldcat.org/oclc/78036788

http://www.worldcat.org/oclc/82944288

http://www.worldcat.org/oclc/79125458

http://www.worldcat.org/oclc/32685289

http://www.worldcat.org/oclc/80775335

http://www.worldcat.org/oclc/83026914

http://www.worldcat.org/oclc/82694761

http://www.worldcat.org/oclc/80053185

http://www.worldcat.org/oclc/77733012

http://www.worldcat.org/oclc/83565150

http://www.worldcat.org/oclc/78435272

http://www.worldcat.org/oclc/79917394

http://www.worldcat.org/oclc/83622730

http://www.worldcat.org/oclc/63306920

http://www.worldcat.org/oclc/82724049

http://www.worldcat.org/oclc/82245687

http://www.worldcat.org/oclc/81639505

http://www.worldcat.org/oclc/63282470

http://www.worldcat.org/oclc/63278243

http://www.worldcat.org/oclc/84075014

http://www.worldcat.org/oclc/237352371

http://www.worldcat.org/oclc/84940143

http://www.worldcat.org/oclc/83659720

http://www.worldcat.org/oclc/86119288

http://www.worldcat.org/oclc/155862206

http://www.worldcat.org/oclc/79106969

http://www.worldcat.org/oclc/155861761

http://www.worldcat.org/oclc/78354837

http://www.worldcat.org/oclc/155862117

http://www.worldcat.org/oclc/83800477

http://www.worldcat.org/oclc/81212285

http://www.worldcat.org/oclc/83555010

http://www.worldcat.org/oclc/81716656

http://www.worldcat.org/oclc/84275833

http://www.worldcat.org/oclc/77679046

http://www.worldcat.org/oclc/82628553

http://www.worldcat.org/oclc/82626039

http://www.worldcat.org/oclc/77766871

http://www.worldcat.org/oclc/479143806

http://www.worldcat.org/oclc/77584655

http://www.worldcat.org/oclc/78630814

http://www.worldcat.org/oclc/81474008

http://www.worldcat.org/oclc/39157043

http://www.worldcat.org/oclc/427311609

http://www.worldcat.org/oclc/82694625