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41
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42
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43
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44
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45by Miller, Walter M., Jr., 1923-1996“...Gregg Press science fiction series....”
Published 1978
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46
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47
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48
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49
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50by Heinlein, Robert A. (Robert Anson), 1907-1988“...Gregg Press science fiction series....”
Published 1978
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51Published 1978“...Gregg Press science fiction series....”
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52
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53
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54
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55
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56
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57
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58
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59by Harben, Will N. (Will Nathaniel), 1858-1919“...Gregg Press science fiction series....”
Published 1975
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60Published 1976“...Gregg Press science fiction series....”
Book