Helga Schier

• Endangered oceans
• Essential Spanish for Law Enforcement
• George Washington Carver
• George Washington Carver (Essential Lives Set 2)
• German Verbs 101 (Learn in Your Car)
• Going beyond
• Intermediate German
• Nuclear power
• September 11, 2001 (Essential Events)
• Speak in a Week German
• The Causes of School Violence (Essential Viewpoints Set 2)
• The Cuban Missile Crisis (Essential Events Set 2)