TY - JOUR A1 - Crittenden, S. T1 - Aptian lithostratigraphy and biostratigraphy (foraminifera) of block 49 in the southern North Sea (U.K. sector) JO - J. Micropalaeontol. J1 - JM VL - 6 IS - 1 SP - 2 EP - Y1 - 1987/05/01 PB - GSL Publishing SN - 2041-4978 UR - https://jm.copernicus.org/articles/6/2/1987/ L1 - https://jm.copernicus.org/articles/6/2/1987/jm-6-2-1987.pdf DO - 10.1144/jm.6.1.11 ER -