Insomnia, tachycardia, and cola drinks.

Intracardiac catheter as a foreign body of six years' duration resulting in endocarditis.

Ruptured mitral chordae after subacute bacterial endocarditis in a child with a secundum atrial septal defect.

Assessment of nitrogen fixation in terrestrial environments in field conditions.

Ventricular tachycardia and transposition of the great arteries.

Bulging anterior fontanelle. Sign of congestive heart failure in infants.

The echocardiogram in a case of mitral stenosis before and after surgery.

Transplantation of articular cartilage in fowls.

Biology and ecology of nitrogen fixation by symbiotic associations of non-leguminous plants.

Electrocardiographic studies in children with lead poisoning.

Reticulum cell sarcoma of the nose and paranasal sinuses.

Modification of the French pressure cell.

Biological nitrogen fixation.

Microbial ecology.

Dermatoglyphics and cleft lip and palate.