[Reports] / Amer.inst.of aeronautics and astronautics. N 90-2476 : Metal-mmonia MHD: a compact high-power marine propulsion engine : Rep. presented at the AIAA/SAE/ASME/ASEE 26th joint propulsion conf., July 16-18, 1990, Orlando(Fl) / M.R.Johnson, 1990. - 8 p. - Текст : непосредственный.
Guidelines for standardised lithostratigraphic descriptions / Republic of South Africa, Department of Mineral and Energy Affairs, South African committee for stratigraphy (SACKS). Circular 1 / M. R. Johnson, 1987. - 18, [1] p. - Текст : непосредственный.
Catalogue of South African lithostratigraphic units / Republic of South Africa, Department of Mineral and Energy Affairs, South African committee for stratigraphy (SACKS) ; editor M. R. Johnson. Vol. 1, 1989. - [21] p. - Текст : непосредственный.
Catalogue of South African lithostratigraphic units / Republic of South Africa, Department of Mineral and Energy Affairs, South African committee for stratigraphy (SACKS) ; editor M. R. Johnson. Vol. 2, 1990. - 50, [1] p. - Текст : непосредственный.
Chronostratigraphic series / Republic of South Africa, Department of Mineral and Energy Affairs, South African committee for stratigraphy (SACKS). № 1 : Revised precambrian time scale for South Africa / M. R. Johnson, D. H. Cornell, F. Walraven, 1989. - 6 p. - Текст : непосредственный.
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