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Reproduced illustration of various species of oceanic squids.
Reproduced illustration by Roger Hayward of various species of oceanic squids as published in Oceanography: A View of the Earth, by M. Grant Gross.
Reproduced illustration of an oikopleura and its feeding house.
Reproduced illustration by Roger Hayward of an oikopleura and its feeding house as published in Oceanography: A View of the Earth, by M. Grant Goss.
Reproduced illustration of a photocell and electrometer tube.
Reproduced illustration by Roger Hayward of a method for mounting a photocell and electrometer tube in an evacuated brass tank as published in Procedures in Experimental Physics, by John Strong.
Reproduced illustration of a micromanipulator.
Reproduced illustration by Roger Hayward of a micromanipulator as published in Procedures in Experimental Physics, by John Strong.
Reproduced illustration of a high-vacuum apparatus.
Reproduced illustration by Roger Hayward of a high-vacuum apparatus as published in Procedures in Experimental Physics, by John Strong.
Reproduced illustration of Geiger counters.
Reproduced illustration by Roger Hayward of the design of some large Geiger counters as published in Procedures in Experimental Physics, by John Strong.
Reproduced illustration of various molecular structures.
Reproduced illustration by Roger Hayward of various molecular structures as published in Botany: Principles and Problems, by Edward W. Sinnott and Katherine S. Wilson.
Reproduced illustration of zones of alteration in a sulphide-bearing vein.
Reproduced illustration by Roger Hayward of a diagrammatic sketch of zones of alteration in a sulphide-bearing vein as published in Mineralogy: Concepts, Descriptions, Determinations, by L. G. Berry and Brian Mason.
Reproduced illustration of stereographic projections.
Reproduced illustration by Roger Hayward of the stereographic projection of some forms on the dihexagonal dipyramidal class 6/m 2/m 2/m as published in Mineralogy: Concepts, Descriptions, Determinations, by L. G. Berry and Brian Mason.
Reproduced illustration of a two-circle reflecting goniometer.
Reproduced illustration by Roger Hayward of a two-circle reflecting goniometer as published in Mineralogy: Concepts, Descriptions, Determinations, by L. G. Berry and Brian Mason.