Encyclopedias, Almanacs, Transcripts, and Maps
- Lowenfeld, Viktor (1903–1960)
- Lung, Aging
- Managed Care and Children
- Many-Worlds Hypothesis
- Marginal People
- Marital Relationships
- Marriage and Remarriage
- Mass Media and Tobacco Control
- Mass Medication
- Master's Degree, the
- Maternal and Child Health
- Maternal and Child Health Block Grant
- Mathematics Education, Teacher Preparation
- Mathematics Learning
- Maximum Tolerated Dose
- Mccall, William A. (1891–1982)
- Media Advocacy
- Media and Learning
- Media, Influence on Children
- Medical College Admission Test (MCAT)