Monograph

Bob Soebijantoro (1988) Pengaruh Perlindungan Air-Bubuk Pada Pencampuran Bahan Tanam Tuang Terhadap Tahanan Kompresinya. Laporan Penelitian. Lembaga Penelitian, Surabaya. (Unpublished)

Bob Soebijantoro (1986) The Effect Of Storage On The Dimensional Changes of dental stones. Laporan Penelitian. Lembaga Penelitian, Surabaya. (Unpublished)

Bob Soebijantoro (1986) Investigation Into The Accuracy Of Cobalt-Chromium Denture Castings. Laporan Penelitian. Lembaga Penelitian, Surabaya. (Unpublished)

Bob Soebijantoro (1986) Kontraksi Logam Campur Yang Terjadi Pada Proses Penuangan/Pengecoran Logam (Suatu Tinjauan Pustaka). Laporan Penelitian. Lembaga Penelitian, Surabaya. (Unpublished)