Section 749. Record of proceedings of the board; certificates and subpoenas

1.  The  board shall cause a record to be kept of its proceedings by its
  secretary or other officer designated by it.
    2. The records  of  its  proceeding  and  copies  of  all  papers  and
  documents  in  its  possession  and  custody may be authenticated in the
  usual form, under the official seal of the board and  the  signature  of
  the  chairman  or  secretary  of  the  board,  and  shall be received in
  evidence in the same manner and with  like  effect  as  deeds  regularly
  acknowledged or proven.
    3.  The  board  may  issue subpoenas, which, when authenticated by any
  member or the secretary shall be regulated by the civil practice law and
  rules.