Claude E. Welch ; illustrated by Muriel McLatchie Miller1958 年出版376 页ISBN:
Pulmonary restriction and obstruction : a programmed text
Patricia Robertson Hercules1979 年出版360 页ISBN:
Bowel obstruction:differential diagnosis and clinical management
Welch;John P.1990 年出版711 页ISBN:0721619630
AIRWAY OBSTRUCTION AND INFLAMMATION:PRESENT STATUS AND PERSPECTIVES
1988 年出版288 页ISBN:3805550065
LECTURE NOTES IN CONTROL AND INFORMATION SCIENCES 628: OBSTRUCTION THEORY
HANS J. BAUES1977 年出版387 页ISBN:3540085343;0387085343