“.... In September 1987, mussels were gathered from one of the floating structures, which had remained in the ocean...”
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“... education. Applying Engeström’s schema (1987) at three different levels of use of the computer as a cultural...”
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“... of California during 1986, 1987 and 1988, it has been established that the reproductive season of sea lions...”
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“... taxidermic records between 1977 and 1989 and from biological samples taken from 1987 to 1989. Size...”
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“... of phytoplankton, water samples were taken in Bahía de los Ángeles during nine days of February and March, 1987...”
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“... lagoon of Santa Rosa, Sonora, monthly surface samplings of plankton were carried out from November 1987...”
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“...Eleven time series were carried out at one station in Estero de Punta Banda, from June 1987 to May...”
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“...Monthly (May 1987 to July 1988) samples were taken in triplicate of surface water at eight stations...”
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“... Valenciennes at the end of the 1987/1988 natural spawning season at Tunas de Zaza, in which the juvenile stage...”
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“... before. The 1985, 1987 and 1990 events show a "normal" evolution, i.e., the warm waters appear...”
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“...Bimonthly samplings were carried out from March 1987 to January 1988 in San Quintín Bay, B.C...”
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“... was the observer database of the Inter-American Tropical Tuna Commission, for 1987 to 1997. The records of floating...”
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“... decrease in productivity for at least 20 years, reinforced by the ENSO events of 1982–84, 1987–88, 1992–93...”
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