5-44 ENGINEERING PROPERTIES OF LAMINATES 



REFERENCES 



(23) Mark, R. , Balsa Cores for Reinforced Plastics Structures, 

 Modern Plastics - 1956 



(24) Giuffria, R. , Microscopic Study of Expandable Polystyrene 

 Bead, Prepuff and Foam - Modern Plastics, June 1959 



(25) Modern Plastics Encyclopedia - Modern Plastics, New York, 

 1959, Foamed Plastics Chart, Pages 549-595 



(26) Wiepping, C.A., Doyle, D. P. , Strength and Related 

 Properties of Balsa Wood, Forest Products Laboratory, 

 Report 1511, June 1944 



(27) Dunbrow, Bernard, Polyurethanes, Reinhold Publishing 

 Corp. , New York, 1957 



(28) Humke, R. K. , Selection Guide for Sandwich Panel Cores, 

 Product Engineering, January 20, 1958 



(29) Newberg, R. F. , Graham, D. L. , Reinforced Low Density 

 Moldings, 14th Annual Technical and Management Conference - 

 Reinforced Plastics Division, Society of the Plastics Industry, 

 Inc., 1959 



(3 0) Werren, F. , Shear Fatigue Properties of Various Sandwich 

 Construction, Forest Products Laboratory, Report 1837, 

 July 1952 



