You can easily search a majority of the Penn Libraries journal titles about Hematology/Oncology in Browzine.
All Journals — Oncology — University of Pennsylvania — BrowZine
Hematology — Medical Specialties A-N — University of Pennsylvania — BrowZine
Below are direct links to a selection of these titles.
Cardio-oncology Practice Manual: a companion to Braunwald's heart disease by 
Discovery and Healing: Reflections on Five Decades of Hematology/Oncology at the Perelman School of Medicine at the University of Pennsylvania by 
The Washington Manual Hematology and Oncology Subspecialty Consult by 
Hematologic malignancies: case studies in cytogenetic and molecular genetics by 
Biology and treatment of leukemia and bone marrow neoplasms by 
