66,2=1 von: Midwest Forum on Geology of Industrial Minerals: Papers presented at the ... Midwest Forum on Geology of Industrial Minerals
81,Sonderh.=90; 82,2=91; 83,2=92; 84,2=93; 85,2=94; 86,2=95; 87,2=96; 88,2=97; 89,2=98; 90,2=99; 91,2=100; 92,2=101; 93,2=102; 94,2=103; 95,2=104; 96,2=105; 97,2=106; 98,1=107; 99,1=108; 104,1=113; 105,1=114; 106,1=115; 107,1=116 von: Ohio Academy of Science (Columbus, Ohio): Annual meeting
In 55,4=1955; in 56,4=1956; in 57,4=1957; in 58,4=1958; in 59,4=1959; in 60,4=1960; in 61,4=1961; in 62,4=1962; in 63,4=1963; in 64,4=1964 von: Ohio Academy of Science (Columbus, Ohio): Annual report of the Ohio Academy of Science