Action Plan for the Protection of the Atmosphere

Convention for the Protection of the

Convention for the Protection of the Ozone Layer

countermeasure for the protection and management

device for the protection of the belt conveyers

International Union for the Protection of New Vari

Paris Convention for the Protection Industrial Property

Union for the Protection of Industrial Property

Vienna Convention for the Protection of the Ozone Layer

dead space of the mask

dust protection mask

mask for inhalation

protection mask

Protective face mask for medical use

(1) for the need of public interest

1-order ordinary differential matrix equation for the state vector

a bull market for the US dollar

a dedicated transformer for the motor starting directly on line

a feast for the gods

a guide-dog for the blind