Feature

Transfusions of Platelets

New Medium Tank

Cigarette Smoking and Stomach Ulcers Linked

Pint-Size Motor Packs Powerful Punch

Nucleic Acid Isolated

Animal and Bacterial Life Found in Ocean’s Depths

Cancer Forecast for 1975

Muriel, Talking Monkey, Has 50-Word Vocabulary

[Photograph]: Growth Factor Crystals

Mars Closest since 1943

Humidity Extremes Affect Vitamin Needs

Atomic Energy Information