RT Journal T1 NUevos estudios sobre los neumotórax espontáneos. JF Archives of Internal Medicine JO Archives of Internal Medicine YR 1939 FD February 1 VO 63 IS 2 SP 432 OP 432 DO 10.1001/archinte.1939.00180190234023 UL http://dx.doi.org/10.1001/archinte.1939.00180190234023 AB This small book deals with spontaneous pneumothorax and its chief causes. The authors differentiate between blebs, bullae, recurrent pneumothorax and tuberculosis as causative agents. The book is well worth while for those who are interested in the subject and can read Spanish.