AH-1G/S and TH-1G helicopter : preventive maintenance daily.

"14 October 1980."

Preventive maintenance services : periodic inspection checklist : UH-60A and EH-60A helicopters.

"12 April 1988."

UH-1H/V and EH-1H/X aircraft : preventive maintenance daily inspection checklist.

"11 January 1983."

The corrosion of iron ; a summary of causes and preventive measures,

Mode of access: Internet.

Revue d'hygiene et de medecine preventive

Mode of access: Internet.

Preventive medicine and hygiene,

Includes bibliographical references.

Microbes militant, a challenge to man; the story of modern preventive medicine and control of infectious diseases

Mode of access: Internet.

Preventive medicine in World War II.

"008-023-00050-6"

Preventive Medicine in World War II

Mode of access: Internet.