000			00414pam a2200145a 44500
082			_aBTS _bMONO B-866
100			_aSchafer,J P
245	1		_aDIURNAL AND SEASONAL VARIATIONS IN THE IONOSPHERE
260			_a _b _c1935
300			_a12
500			_aBound With Bts Mono B-849-864, 870-895,Lack No.855,58,63-65,67-69,74,76-80,82-84,86-87,90-91
700			_aGoodall,W M
964			_gCIRC
997			_aTR17265 C
999			_c401880 _d401880