Bullfrog books. Machines at work

Simple text and photographs explain diggers, or excavators, and the jobs these machines do.

"Carefully leveled text in a narrative format couple with ... photographs to explore the function and features of tugboats. Includes picture glossary and index."--Provided by publisher.

Simple texts and photographs explain how concrete mixers work.

"Carefully leveled text in a narrative format couple with ... photographs to explore the function and features of ambulances. Includes picture glossary and index."--Provided by publisher.

"Carefully leveled text in a narrative format couple with ... photographs to explore the function and features of icebreakers. Includes picture glossary and index."--Provided by publisher.

"Carefully leveled text in a narrative format couple with ... photographs to explore the function and features of snowplows. Includes picture glossary and index."--Provided by publisher.

"This photo-illustrated book for early readers explains the parts of tanks that help keep the crew safe when they go into battle"--Provided by the publisher.

"This photo-illustrated book for early readers tells about the parts of a backhoe and how the machine is used to put in an underground pipe"--.

"This photo-illustrated book for early readers tells about the parts of a garbage truck and different kinds of trucks used to collect trash"--.

"This photo-illustrated book for early readers describes different types of fire trucks and how they are each suited for fighting fires in different areas. Includes photo glossary"--provided by publisher.