<Ul> <Li> Fiber crop </Li> <Li> Paper chemicals </Li> <Li> Papyrus </Li> <Li> Wood pulp </Li> </Ul> <Tr> <Th> Specifications </Th> <Td> <Ul> <Li> Grammage </Li> <Li> Density </Li> <Li> Size </Li> <Li> Units of paper quantity </Li> <Li> Surface chemistry of paper </Li> <Li> Wet strength </Li> </Ul> </Td> </Tr> <Ul> <Li> Grammage </Li> <Li> Density </Li> <Li> Size </Li> <Li> Units of paper quantity </Li> <Li> Surface chemistry of paper </Li> <Li> Wet strength </Li> </Ul> <Li> Units of paper quantity </Li>

What kind of paper is used in books