What has the author Helen Orme written?

Helen Orme has written:

'Big Yellow Balloon'

'Let's explore Pluto and beyond' -- subject(s): Juvenile literature

'Lions in Danger' -- subject(s): Juvenile Nonfiction, Nature, Nonfiction, Science, OverDrive

'What things are made of' -- subject(s): Science, Materials, Juvenile literature

'Energy for the future' -- subject(s): Energy development, Environmental aspects, Environmental aspects of Energy development, Environmental aspects of Power resources, Juvenile Nonfiction, Juvenile literature, Nonfiction, OverDrive, Power resources, Renewable energy sources

'Healthy eating' -- subject(s): Food, Nutrition, Juvenile literature

'Gorillas in Danger' -- subject(s): Juvenile Nonfiction, Nature, Nonfiction, Science, OverDrive

'Habitat destruction' -- subject(s): Juvenile literature, Habitat conservation, Conservation of Natural Resources, Habitat (Ecology), Nature, Effect of human beings on, OverDrive, Juvenile Nonfiction, Nonfiction