Modern drafting techniques for quality microreproductions /
Nelson, Carl Erwin, 1903-.
Modern drafting techniques for quality microreproductions / Carl E. Nelson. - Silver Spring, Md. : National Microform Association, 1971. - ix, 38 p. : ill. ; 28 cm. - NMA informational monograph ; no. 3 .
Includes bibliographical references (p. 31-35) and index
Drawing--Room practice.
Microphotography.
Modern drafting techniques for quality microreproductions / Carl E. Nelson. - Silver Spring, Md. : National Microform Association, 1971. - ix, 38 p. : ill. ; 28 cm. - NMA informational monograph ; no. 3 .
Includes bibliographical references (p. 31-35) and index
Drawing--Room practice.
Microphotography.