TY - BOOK ID - 127768502 TI - The fourth International tug convention PY - 1976 SN - 0900335394 PB - London : Reed, DB - UniCat KW - Barges KW - Offshore support vessels KW - Towboats KW - Tugboats KW - Congresses. UR - https://www.unicat.be/uniCat?func=search&query=sysid:127768502 AB - ER -