1. Mail consisting of printed matter qualifying for reduced postal rates
   - third class

Type of: mail

• electrical relay
• electrical resistance
• electrical shock
• electrical shunt
• electrical skin response
• electrical storm
• electrical switch
• electrical system
• electrical work
• electrically
• electrician
• electricity
• electrification
• electrify
• electrifying
• electrifyingly
• electro
• electro-acoustic transducer
• electrocardiogram
• electrocardiograph
• electrocardiographic
• electrocardiography
• electrocautery
• electrochemical
• electrochemical series