Mr. Alberto Abreu

H. D. Hudson International, Ltd.

San José, Costa Rica

Dr. Alberto Aguilar Rivas

Ministry of Public Health

San Salvador, El Salvador

Dr. Miguel Aguilar Olin

Directorate of Health

San Salvador, El Salvador

Dr. Guillermo Alfaro

Directorate of Health

San Salvador, El Salvador

Dr. Nelda Alger

Department of Zoology

University of Illinois

Urbana, Illinois

Dr. Juan Allwood Paredes

Department of Health

Organization of Central American States

San Salvador, El Salvador

Dr. Alcides Almada López

National Malaria Eradication Program

Asunción, Paraguay

Dr. Djalma Almeida

National Malaria Eradication Program

Rio de Janeiro, Brazil

Dr. Carlos A. Alvarado, former Director

Malaria Eradication Division

World Health Organization

S. S. de Jujuy, Argentina

Dr. Humberto Alvarez Cruz

Directorate of Health

San Salvador, El Salvador

Dr. Guillermo Amaya de León

Directorate of Health

San Salvador, El Salvador

Mr. Felipe Arellano

National Malaria Eradication Program

Managua, Nicaragua

Dr. Harold Austin

Private Physician

Provo, Utah

Mr. Joseph Austin

Pan American Health Organization

San Salvador, El Salvador

Mr. Jesús Avila Esparza

National Malaria Eradication Program

México, D. F., México

Dr. Ruben Ayala

Directorate of Health

San Salvador, El Salvador

Dr. Jaime Ayalde

Pan American Health Organization

Washington, D. C.

Dr. Robert W. Babione

Malaria Consultant

Arlington, Virginia

Dr. Carlo Balestrini

Pan American Health Organization

San Salvador, El Salvador

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