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2.
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Varland, R. H., S.P.E. Journal, 22 (11), (1966), 34.
8.
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9.
Doherty, D. J., Ball, G. W., Walker, M. G., Trans. Plast. Inst., London, Supplement No. 1, (1965), 257.
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Buist, J. M., Gudgeon, H., Editors, Advances in Polyurethane Technology Published by Elsevier Publishing Company Ltd.
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Bruins P. F., Editor, Polyurethane Technology, Interscience Publishers, John Wiley and Sons.
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Hurd, R., Ball. int. Inst. Refrig. Annex 1, (1957), 195.
27.
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31.
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32.
Doherty, D. J., Wilson, W. J., int. Inst. Refrig. paper given to Commission VIII, Le Havre 1969, Annex 1969-5, Supplement au Bulletin de l'Institut International du Froid.
33.
Sécurité centre l'incendie-Décret No. 57-1161 du 17 octobre 197 -arrêté du décembre 1957-Edition mise à jour à la date du 30 mars 1965 : Journaux officiels, Paris.
34.
Flammability Handbook for Plastics— Hilado, C. J., Technomic Publication Co. Inc.
35.
Krueger, O. A., Lyle, K. C., Jackson, D. E., J. Cell. Plast.3 (11), (1967), 497.
36.
Mitchell, D. W., Murphy, E. M., Nagy, J., U.S. Bureau of Mines Report, Invest, No. 6366 (1964).
37.
Department of Transportation (American), Federal Highways Administration (40 CFR Part 371), Federal Register.34 (249), 31 December 1969.
38.
Einhorn, I. N., et al, J. Cell. Plast., 4 (5), (1968), 788.
39.
Rarig, F. J., Bartosic, A. J., Symposium on Fire Test methods-Restraint and Smoke, A.S.T.M. STP422, (1966). 106.
40.
Wilde, D. G., Heating and Ventilating Engineer, 42, (Dec. 1968), 283.
41.
Yuill, C. H., Journal of Fire and Flammability, 1 (Oct 1970), 312.
