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517,985 subject pages: 4,516 OpenAlex topics and 513,469 Library of Congress subjects. Exact coverage and source dates · Numeric map and gap method
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Mental Health Treatment and Access
IoT and Edge/Fog Computing
Synthesis and biological activity
2D Materials and Applications
Helicobacter pylori-related gastroenterology studies
Vitamin D Research Studies
Electric Motor Design and Analysis
Urinary Bladder and Prostate Research
Shoulder Injury and Treatment
Advanced Battery Materials and Technologies
Financial Risk and Volatility Modeling
Hearing Loss and Rehabilitation
Anaerobic Digestion and Biogas Production
Venous Thromboembolism Diagnosis and Management
Information Retrieval and Search Behavior
Algebraic structures and combinatorial models
Fractional Differential Equations Solutions
European Union Policy and Governance
Pregnancy and preeclampsia studies
Dialysis and Renal Disease Management
Acute Myocardial Infarction Research
Thyroid Disorders and Treatments
Cell death mechanisms and regulation
Plasmonic and Surface Plasmon Research
Vector-borne infectious diseases
Philosophical Ethics and Theory
Urban Transport and Accessibility
Photonic and Optical Devices
Congenital Heart Disease Studies
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