Richards, F. Practical perspective : a treatise showing just how to make all kinds of mechanical drawings in the only practical perspective (isometric) : makes everything plain so that any mechanic can understand a sketch or drawing in this way : saves stime in the drawing room and mistakes in the shops : contains practical examples of various classes of work / by Frank Richards and Fred. H. Colvin; F. Richards .— 3 edition, fully illustrated .— : The Norman W. Henley Publishing Co., 1908 .— 60 с. — Lang: eng .— URL: https://rucont.ru/efd/131090 (дата обращения: 15.05.2024)