"Microscopy Juvenile fiction." . . "Selsam, Millicent E." . . . . . . . "Greg's Microscope" . . . "Greg's microscope"@en . "Greg's microscope" . . . . "Greg gets a microscope and has a fascinating time looking at sugar and salt crystals, thread, hairs, and cells."@en . "Greg gets a microscope and has a fascinating time looking at sugar and salt crystals, thread, hairs, and cells." . . . . . . . . . "Fiction"@en . . . . . . "Juvenile works" . "Juvenile works"@en . . . "Greg gets a microscope and has a fascinating time looking at sugar and salt crystals, flour, hair, and more."@en . . . "Greg gets a microscope and has a fascinating time looking at sugar and salt crystals, flower, hair, and much else."@en . . . . . "New York : Harper & Row, c1963." . . "Microscopes Juvenile fiction." . . "Braille editions." . . . .