TY - `BOOK` AU - Poulton, T. P. AU - Poulton, T.P. TI - Jurassic trigoniid bivalves from Canada and Western United States of America PB - Geological Survey Canada CY - Ottawa PY - 1979 LA - eng SE - 82 S : 2 Beil T2 - Bulletin / Geological Survey of Canada M1 - 282 SN - 0-660-01535-8 SN - 978-0-660-01535-4 CN - 79 S 301 AN - UBHD-1475978 ER -