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Scoring tables, bidding system and memory cards for the game of bridge.

Thirteen cards and 635,013,559,600 possibilities

Scoring tables, bidding system and memory cards for the game of bridge.

 
Estimation of the air volume consumed by human activities.

“Volumes of air” project

Estimation of the air volume consumed by human activities.

 
History, advantages and usage contexts of the PNG image format.

A flexible, optimized and free image format

History, advantages and usage contexts of the PNG image format.