Lupar valley, West Sarawak Malaysia : explanation of sheets 1-111-14, 1-111-15 and part of 1-111-16 - Tan, Denis Ngah Kiat; Malaysia. Jabatan Penyiasatan Kajibumi (Kuching : National Printing Department, 1979)
Two coloured geological maps are in the pocket inside the back cover
Keywords: Sarawak