What has the author Roger Francis Tredgold written?

Margaret H. Tredgold has written:

'Why the Bush Fowl Calls at Sunrise'

'Street Kid'

'The Cucumber Girls and the Little Nurse'

'How the Lizard Lost His Tail'

'The riders and the baobab tree'

'Zimbabwe's wild flowers' -- subject(s): Wild flowers, Identification, Pictorial works, Botanical illustration

'Tendai Wins the Jackpot'

'The Baobab Children'

'The hare in the moon'