01679cas a22003977a 450000500170000000800410001701000100005801100100006802200140007803500100009224501120010226000690021430000070028331000120029036200200030265000650032265000690038786600570045686600670051386600630058086600660064386600700070986600690077986600320084886600440088086600320092486600340095686600320099086600340102286600690105686600340112586600350115986600290119486600290122386600290125220220329142007.0981202c1970    us wr p rnin  0 hub1eng d  a76762  a777340 a0090-0508  a8741800aCurrent Contents :bAgriculture, Biology & Environmental Sciencesc/by Institute for Scientific Information0 aPhiladelphia, PA :bInstitute for Scientific Information,c1970-  av.  aSemanal  av.29 n.40, 199814aBiologíaxPublicaciones periódicasxServicios de alerta.14aMedio ambientexPublicaciones periódicasxServicios de alerta.  a29 45 (November 9, 1998) - 29 52 (December 28, 1998)  av. 30 n. 1 (January 4, 1999) - v. 30 n. 52 (December 27, 1999)  av. 31 n. 1 (January 3, 2000) - v. 31 n. 31 (July 31, 2000)  av. 31 n. 32 (August 7, 2000) - v. 31 n. 44 (October 30, 2000)  av. 31 n. 46 (November 13, 2000) - v. 31 n. 47 (November 20, 2000)  av. 31 n. 49 (December 4, 2000) - v. 31 n. 52 (December 25, 2000)  av. 32 n. 10 (March 5, 2001)  av. 32 n. 19 (May 7, 2001) - v. 32 n. 29  av. 32 n. 24 (June 18, 2001)  av. 32 n. 3 (January 15, 2001)  av. 32 n. 31 (July 30, 2001)  av. 32 n. 40 (October 1, 2001)  av. 32 n. 45 (November 5, 2001) - v. 32 n. 46 (November 12, 2001)  av. 32 n. 5 (January 29, 2001)  av. 32 n. 8 (February 19, 2001)  av.27 n.1-46,48-53 (1996)  av.28 n.1-24,36-52 (1997)  av.29 n.1-27,29-44 (1998)