TY - BOOK ID - 145974128 TI - the periderm and its derivatives in the dendroidea and in mastigograptus. Vol. 1 AU - Urbanek, Adam. AU - Towe, Kenneth M. PY - 1974 PB - Washington : Smithsonian Institution Press, DB - UniCat KW - GRAPTOLITES UR - https://www.unicat.be/uniCat?func=search&query=sysid:145974128 AB - ER -