Environmental Science

Volume, Title, and Unique Books data collected on May 31, 2007.
Circulation statistics for the ALC fiscal year ending May 31, 2007.

Volume Count and Average Age

Counts and average ages of volumes (individual barcoded items) in Environmental Science. This count only includes bound monographic materials.

	ACU	APL	HSU	McM	HPU	ALC
1400-1699	2					2
1700-1799
1800-1899	101					101
1900-1909	82					82
1910-1919	112					112
1920-1929	482	45				527
1930-1939	541					541
1940-1949	570	6				576
1950-1959	963	27	1		3	994
1960-1969	1,474	140	1		13	1,628
1970-1974	1,025	71			2	1,098
1975-1979	1,168	200	3		10	1,381
1980-1984	1,114	150	5		9	1,278
1985-1989	1,038	261	6	1	8	1,314
1990-1994	844	582	14	2	26	1,468
1995-1999	881	860	42	34	22	1,839
2000-2004	682	1,090	47	13	26	1,858
2005	88	200	4	1	2	295
2006	68	259	1	1	2	331
2007	10	61		1		72
Totals	11,245	3,952	124	53	123	15,497
Average Age	1971	1994	1997	1998	1989	1977
Percent of Collection	3.99%	1.49%	0.08%	0.04%	0.16%	1.68%

Title Count and Average Age

Counts and average ages of titles (excludes duplicate copies) in Environmental Science. This count only includes bound monographic materials.

	ACU	APL	HSU	McM	HPU	ALC
1400-1699	2					2
1700-1799
1800-1899	67					67
1900-1909	51					51
1910-1919	98					98
1920-1929	155	2				156
1930-1939	249					249
1940-1949	455	5				460
1950-1959	804	11	1		3	817
1960-1969	1,345	88	1		13	1,421
1970-1974	884	51			2	927
1975-1979	1,087	134	3		10	1,215
1980-1984	1,029	126	5		6	1,146
1985-1989	927	196	6	1	8	1,108
1990-1994	775	511	14	2	25	1,262
1995-1999	835	673	42	29	22	1,533
2000-2004	583	807	46	12	24	1,433
2005	79	141	4	1	2	225
2006	56	170	1	1	2	224
2007	9	48		1		57
Totals	9,490	2,963	123	47	117	12,451
Average Age	1974	1995	1997	1999	1989	1979
Percent of Collection	4.18%	1.59%	0.09%	0.04%	0.17%	1.95%

Unique Books Count and Average Age

Counts and average ages of unique books (titles held by only one ALC library) in Environmental Science. This count only includes bound monographic materials.

	ACU	APL	HSU	McM	HPU
1400-1699	2
1700-1799
1800-1899	51
1900-1909	36
1910-1919	82
1920-1929	127
1930-1939	207
1940-1949	352	2
1950-1959	581	3			3
1960-1969	884	34			12
1970-1974	606	29			1
1975-1979	752	81	3		5
1980-1984	692	86	5		5
1985-1989	672	114	4	1	8
1990-1994	548	342	12	1	18
1995-1999	624	462	28	14	9
2000-2004	416	522	33	6	16
2005	53	96	3	1	2
2006	42	107		1	2
2007	7	36		1
Totals	6,734	1,914	88	25	81
Average Age	1974	1995	1997	1999	1988

Total Circulation

A count of charges and renewals for Environmental Science. This count only includes circulation of bound monographs, CDs, videos, and DVDs.

	Patron System
	ACU	APL	HSU	McM	CJC	HPU	Total
ACU Items	445	54	29	17	0	2	547
APL Items	206	2,370	72	91	2	0	2,741
HSU Items	0	6	6	0	0	0	12
McM Items	1	0	0	0	0	0	1
HPU Items	1	0	0	0	0	1	2
Totals	653	2,430	107	108	2	3	3,303

Circulation by Item Age

A count of charges and renewals for Environmental Science, broken down by item age and item owner. This count only includes circulation of bound monographs, CDs, videos, and DVDs, and only items which have a valid date in their DATE_1 field.

	ACU	APL	HSU	McM	HPU	ALC
1400-1699
1700-1799
1800-1899	2					2
1900-1909	2					2
1910-1919	1					1
1920-1929	7					7
1930-1939	5					5
1940-1949	7	2				9
1950-1959	26	5				31
1960-1969	33	36				69
1970-1974	13	17				30
1975-1979	29	69	1			99
1980-1984	53	37				90
1985-1989	48	76	1			125
1990-1994	82	212	1			295
1995-1999	102	459	2	1		564
2000-2004	88	706	6		1	801
2005	26	297	1			324
2006	22	769			1	792
2007	1	56				57
Totals	547	2,741	12	1	2	3,303
Percent of Circulation	1.49%	0.43%	0.05%	0.01%	0.04%	0.47%

Non-Circulating Use

A count of Non-Circulating usage for Environmental Science (as recorded by the circulation "Mark Item Used" command). This count only includes bound monographs, CDs, videos, and DVDs.

ACU	APL	HSU	McM	HPU
210	1	3	0	1

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