What has the author Robert Hull written?

Robert Hull has written:

'The Aztec empire' -- subject(s): Social life and customs, Aztecs, Juvenile literature, History

'Religion & the gods' -- subject(s): Juvenile literature, Religion, Greek Mythology

'Peasant' -- subject(s): Civilization, Medieval, Civilization,Medieval, History, Juvenile literature, Peasantry, Peasants

'Poetry--from reading to writing' -- subject(s): Authorship, Study and teaching (Elementary), Language arts (Elementary), Poetry

'Stonemason' -- subject(s): Juvenile literature, History, Stonemasons, Stonemasonry, Medieval Civilization