40 leaves exercise books are mostly use in schools like primary schools, secondary schools and even higher institutions/universities It is also used in offices and some organizations It is use for document keeping, essay writing, mathematics etc. It contains 12 pieces in a pack40 leaves exercise books are mostly use in schools like primary schools, secondary schools and even higher institutions/universities It is also used in offices and some organizations It is use for document keeping, essay writing, mathematics etc. It contains 12 pieces in a pack40 leaves exercise books are mostly use in schools like primary schools, secondary schools and even higher institutions/universities It is also used in offices and some organizations It is use for document keeping, essay writing, mathematics etc. It contains 12 pieces in a pack40 leaves exercise books are mostly use in schools like primary schools, secondary schools and even higher institutions/universities It is also used in offices and some organizations It is use for document keeping, essay writing, mathematics etc. It contains 12 pieces in a pack40 leaves exercise books are mostly use in schools like primary schools, secondary schools and even higher institutions/universities It is also used in offices and some organizations It is use for document keeping, essay writing, mathematics etc. It contains 12 pieces in a pack