Margo Leftin

IND:30000091767495

Solar cycle

Ralph Jeffery Slutz

IND:30000091794432

Ionospheric forecasting

William Branham Jones

IND:30000091794333

Ionosphere

Institute for Telecommunication Sciences

PSU:000070963892

Graphic methods

George W. Haydon / Margo Leftin / Rayner K. Rosich

MINN:30000010246316

Government publications

Pamela Gosnell / Margo Leftin

MINN:20000003174675

Government publications

Boulder Laboratories (U.S.) / William Branham Jones / Roger M. Gallet / Margo Leftin / Ronald P. Graham

OCLC:897974335

George W. Haydon / Margo Leftin / Rayner K. Rosich

OCLC:45235710

Radio wave propagation

William Branham Jones / Institute for Telecommunication Sciences / Ronald P. Graham / Margo Leftin / Boulder Laboratories (U.S.) / United States. Environmental Science Services Administration. Research Laboratories

OCLC:632827509

Ionosphere

George W. Haydon

OCLC:45235710

Wireless communication systems

Margo Leftin / S. M. Ostrow / C. Preston

OCLC:19915098

Ionosphere

Margo Leftin / Institute for Telecommunication Sciences and Aeronomy (U.S.) / Sidney M. Ostrow / Constance C. Preston / United States. Environmental Science Services Administration / Boulder Laboratories (U.S.)

OCLC:17330608

Ionospheric radio wave propagation

Ralph Jeffery Slutz / Institute for Telecommunication Sciences and Aeronomy (U.S.) / Thomas N. Gautier / Margo Leftin / United States. Environmental Science Services Administration / Boulder Laboratories (U.S.)

OCLC:17330485

Ionospheric radio wave propagation

Pamela Gosnell / Margo Leftin

OCLC:880012684

Radio wave propagation

Institute for Telecommunication Sciences / Alfred F. Barghausen / Margo Leftin / Larry D. Schultz / Boulder Laboratories (U.S.)

OCLC:897965803

OCLC:897975538

Donald Milford Baker / Duane C. Hyovalti / Eric G. Johnson / Gary D. Gierhart / Henry Unruh / Howard J. M. Hanley / J. Ralph Johler / John J. Gniewek / L. L. Smith / Robert F. Calfee / Robert Joseph Corruccini / Thomas L. Davis / Thomas Martin Georges / W. B. Harding / William Branham Jones / M. E. Johnson / William Sidney Benedict

LCCN:67060101

Aeronautical instruments

Leftin, Margo

OCLC:32135660

Ionospheric radio wave propagation

Margo Leftin / R. G. Peterson

OCLC:968780032

Ionospheric radio wave propagation

United States. Department of Commerce. Office of Telecommunications / Margo Leftin

OCLC:897977860

United States. Department of Commerce. Office of Telecommunications / Margo Leftin

OCLC:897977795

United States. Department of Commerce. Office of Telecommunications / Margo Leftin / Vaughn Agy / Kent D. Boggs / George W. Haydon / Rayner K. Rosich

OCLC:897977790

OCLC:897986792

United States. Department of Commerce. Office of Telecommunications / Margo Leftin

OCLC:897977796

United States. Department of Commerce. Office of Telecommunications / Margo Leftin / Vaughn Agy / Kent D. Boggs

OCLC:897977606

Margo Leftin

OCLC:897986883

Radio frequency

OCLC:897989699

Institute for Telecommunication Sciences and Aeronomy (U.S.) / Alfred F. Barghausen / Margo Leftin / Boulder Laboratories (U.S.)

OCLC:897985037

United States. Department of Commerce. Office of Telecommunications / Margo Leftin / Vaughn Agy / Kent D. Boggs / George W. Haydon / John L. Lloyd

OCLC:897977900

Institute for Telecommunication Sciences / Margo Leftin / Kent D. Boggs / James W. Finney / George W. Haydon / Boulder Laboratories (U.S.)

OCLC:897986263