Quizá quiso decir: NATO Science Series, Series IV: Earth and Environmental Sciences, 1568-1238 ; 46 NATO Science Series, Series IV: Earth and Environmental Sciences, 1568-1238 ; 56 NATO Science Series IV: Earth and Environmental Series, 1568-1238 ; 47 NATO Science Series, Series IV: Earth and Environmental Series, 1568-1238 ; 48 NATO Science Series IV: Earth and Environmental Series, 1568-1238 ; 50 NATO Science Series, Series IV: Earth and Environmental Series, 1568-1238 ; 51 NATO Science Series, Series IV: Earth and Environmental Series, 1568-1238 ; 52 NATO Science Series, Series IV: Earth and Environmental Series, 1568-1238 ; 53 NATO Science Series, Series IV: Earth and Environmental Series, 1568-1238 ; 54 Nato Science Series: IV: Earth and Environmental Sciences, 1568-1238 ; 38 Nato Science Series: IV: Earth and Environmental Sciences, 1568-1238 ; 41 NATO Science Series: IV: Earth and Environmental Sciences, 1568-1238 ; 42 Nato Science Series: IV: Earth and Environmental Sciences, 1568-1238 ; 43 NATO Science Series IV: Earth and Environmental Sciences, 1568-1238 ; 55 Nato Science Series: IV: Earth and Environmental Sciences, 1568-1238 ; 57 Nato Science Series: IV: Earth and Environmental Sciences, 1568-1238 ; 58 Nato Science Series: IV: Earth and Environmental Sciences, 1568-1238 ; 59 Nato Science Series: IV: Earth and Environmental Sciences, 1568-1238 ; 60 NATO Science Series: IV: Earth and Environmental Sciences, 1568-1238 ; 63 Nato Science Series: IV: Earth and Environmental Science, 1568-1238 ; 62