アメリカ合衆国の科学博物館におけるコミュニケーションサービスの実情調査 (https://hdl.handle.net/2115/34810) yearmonth count 200810 4 200811 39 200812 17 200901 19 200902 11 200903 10 200904 9 200905 3 200906 10 200907 8 200908 12 200909 8 200910 10 200911 12 200912 9 201001 9 201002 5 201003 9 201004 6 201005 6 201006 12 201007 21 201008 17 201009 17 201010 12 201011 16 201012 16 201101 19 201102 19 201103 14 201104 20 201105 22 201106 22 201107 21 201108 25 201109 18 201110 27 201111 23 201112 26 201201 21 201202 23 201203 19 201204 16 201205 27 201206 19 201207 22 201208 16 201209 6 201210 6 201211 8 201212 12 201301 8 201302 6 201303 6 201304 11 201305 15 201306 25 201307 11 201308 9 201309 31 201310 16 201311 16 201312 5 201401 15 201402 9 201403 19 201404 8 201405 14 201406 9 201407 12 201408 3 201409 6 201410 8 201411 13 201412 8 201501 8 201502 8 201503 11 201504 12 201505 8 201506 6 201507 11 201508 9 201509 13 201510 14 201511 15 201512 20 201601 17 201602 16 201603 16 201604 6 201605 12 201606 7 201607 14 201608 1 201609 8 201610 4 201611 11 201612 7 201701 8 201702 1 201703 4 201704 3 201705 14 201706 15 201707 6 201708 18 201709 9 201710 2 201711 14 201712 28 201801 43 201802 3 201803 5 201804 4 201805 4 201806 5 201807 6 201808 4 201809 8 201811 8 201812 9 201901 9 201902 4 201903 10 201904 12 201905 14 201906 7 201907 16 201908 11 201909 9 201910 21 201911 10 201912 8 202001 9 202002 3 202003 5 202004 4 202005 3 202006 9 202007 4 202008 16 202009 11 202010 16 202011 9 202012 13 202101 16 202102 8 202103 6 202104 10 202105 6 202106 11 202107 8 202108 6 202109 4 202110 2 202111 2 202112 5 202201 2 202202 6 202203 3 202204 6 202205 4 202206 7 202207 4 202208 19 202209 2 202210 5 202211 4 202212 6 202301 9 202302 4 202303 5 202304 17 202305 4 202306 6 202307 5 202308 7 202309 8 202310 1 202311 7 202312 6 202401 9 202402 18 202403 6