Document npdE7boyOJd8Jr3E6Gw4w2BLX

c 19CC4' S *.y *** * * ^ 111 * w 1 * * K- Womi.k H. AlcO. p.ocy N 3. 185--189. 55. S I y n f y k it* K-. W i 1eV K. Med. proy. I9C2. 2. 85- X. 66. Timbrel, Skldmort, Siml. Hel. Drewlen. II Intern. Konfi-r. . fiber die biolop Wlrlc. del Aibcstci. 1968. 57. Wacntr, S Mil more. Ann. N. Y. And. Science*. 1965. 132. N t, 77--80. Ditcutt. 121--127. 58. Winner. Slaubluncenerkrankunjcn. Dd. 3, 9. 506--569, 1958. 59. W e 111 * k c el *1. Lib. invelliL'.. 1055. If N II. ifOM-l'OU 60 \V i r b u r p O. Science, 1930. v. 123. u. 309. 61. Vorwld cl #1. Arc|i. Ind. JIyi. 3, j, I--43, IVS|. 62. V i C I i * n i. Ptrnli. Sand. Hel. Dicidcn. It Intern. Konicr. fiber die bioloe. \Virk. del Aibeilri. 1958. 63. Yoihlkava. Jpuin. of Science o( Labour. 36. I960, I*.' PRODUCED BY FORD