00427nam a22001577a 4500 3229 3229 200323b ||||| |||| 00| 0 eng d 621.43 H4745 892 Heldet, P. M. High-speed combustion engines: Design: Production: Tests 15th ed. 15th ed. Heldt 1951 vii,776 p. 75.00 Automobiles Motors BK 0 0 ddc 0 621_430000000000000_H4745 0 8456 CL CL 1957-05-28 A. H. Wheeler 621.43 H4745 02343 2020-03-23 BK