- Photography, Artistic -- Problems, exercises, etc
- Stress relaxation -- Problems, exercises, etc
- Statistics -- Problems, exercises, etc
- English language + Spoken English -- Problems, exercises, etc
- French language + Composition and exercises -- Problems, exercises, etc
- Thought and thinking -- Problems, exercises, etc
- Spanish language + Verb -- Problems, exercises, etc
- Multiplication -- Problems, exercises, etc
- Ocular dominance -- Problems, exercises, etc
- Love -- Problems, exercises, etc
- Psychic ability -- Problems, exercises, etc
- Mathematics -- Problems, exercises, etc -- Juvenile literature
- French language + Grammar -- Problems, exercises, etc
- English language + Business English -- Problems, exercises, etc
- Adult children of dysfunctional families + Psychology -- Problems, exercises, etc
- Reading + Phonetic method -- Problems, exercises, etc
- Academic writing -- Problems, exercises, etc
- Authorship -- Problems, exercises, etc
- English language + Prepositions -- Problems, exercises, etc
- Biology -- Problems, exercises, etc
- Report writing -- Problems, exercises, etc
- Italian language + Grammar -- Problems, exercises, etc
- German language + Grammar -- Problems, exercises, etc
- Division -- Problems, exercises, etc
- Success + Psychological aspects -- Problems, exercises, etc
- Vocabulary -- Problems, exercises, etc
- Typewriting -- Problems, exercises, etc
- Programming languages (Electronic computers) -- Problems, exercises, etc -- Juvenile literature
- Addition -- Problems, exercises, etc
- Electrical engineering -- Problems, exercises, etc
- Cognition + Age factors -- Problems, exercises, etc
- Language arts -- Problems, exercises, etc
- Subtraction -- Problems, exercises, etc
- Writing + Study and teaching (Elementary) -- Problems, exercises, etc -- Juvenile literature
- Composition (Photography) -- Problems, exercises, etc