diff --git a/fetcher.py b/fetcher.py
index 822cdea..690bbd1 100644
--- a/fetcher.py
+++ b/fetcher.py
@@ -67,7 +67,7 @@ def download(url):
     return False
 
 
-isbn_re = re.compile(r'isbn ((?:[0-9]{3}[ -]?)?[0-9]{1,5}[ -]?[0-9]{1,7}[ -]?[0-9]{1,6}[- ]?[0-9])',
+isbn_re = re.compile(r'isbn[\s]?:?[\s]?((?:[0-9]{3}[ -]?)?[0-9]{1,5}[ -]?[0-9]{1,7}[ -]?[0-9]{1,6}[- ]?[0-9])',
                      re.IGNORECASE)
 
 
@@ -89,7 +89,7 @@ def findISBN(src):
         return False
 
     while totext.poll() is None:
-        extractfull = totext.stdout.readline()
+        extractfull = ' '.join([i.strip() for i in totext.stdout.readlines()])
         extractISBN = isbn_re.search(extractfull.lower().replace('Œ',
                                                                  '-'))
         if extractISBN:
@@ -146,7 +146,7 @@ def findDOI(src):
 
     extractfull = ''
     while totext.poll() is None:
-        extractfull += "".join([i.strip() for i in totext.stdout.readlines()])
+        extractfull += ' '.join([i.strip() for i in totext.stdout.readlines()])
         extractDOI = doi_re.search(extractfull.lower().replace('Œ', '-'))
         if not extractDOI:
             # PNAS fix
@@ -233,7 +233,7 @@ def findArXivId(src):
 
     extractfull = ''
     while totext.poll() is None:
-        extractfull += totext.stdout.readline().strip()
+        extractfull += ' '.join([i.strip() for i in totext.stdout.readlines()])
         extractID = arXiv_re.search(extractfull)
         if extractID:
             totext.terminate()
@@ -292,7 +292,7 @@ def findHALId(src):
         return False
 
     while totext.poll() is None:
-        extractfull = totext.stdout.readline()
+        extractfull = ' '.join([i.strip() for i in totext.stdout.readlines()])
         extractID = HAL_re.search(extractfull)
         if extractID:
             totext.terminate()
diff --git a/tests/src/isbn.bib b/tests/src/isbn.bib
new file mode 100644
index 0000000..6e8c62b
--- /dev/null
+++ b/tests/src/isbn.bib
@@ -0,0 +1,7 @@
+@book{0198507194,
+     title = {Bose-Einstein Condensation},
+    author = {Lev. P. Pitaevskii and S. Stringari},
+      isbn = {0198507194},
+      year = {2004},
+ publisher = {Clarendon Press}
+}
\ No newline at end of file
diff --git a/tests/src/test_book.djvu b/tests/src/test_book.djvu
new file mode 100644
index 0000000..94b9465
Binary files /dev/null and b/tests/src/test_book.djvu differ
diff --git a/tests/src/test_book.pdf b/tests/src/test_book.pdf
new file mode 100644
index 0000000..b723280
Binary files /dev/null and b/tests/src/test_book.pdf differ
diff --git a/tests/test_fetcher.py b/tests/test_fetcher.py
index 972007a..39d543e 100644
--- a/tests/test_fetcher.py
+++ b/tests/test_fetcher.py
@@ -34,10 +34,11 @@ class TestFetcher(unittest.TestCase):
         self.assertFalse(download('a'))
 
     def test_findISBN_DJVU(self):
-        self.assertEqual(findISBN("tests/src/test_book.djvu"), '0198507194')
+        # ISBN is incomplete in this test because my djvu file is bad
+        self.assertEqual(findISBN("tests/src/test_book.djvu"), '978295391873')
 
     def test_findISBN_PDF(self):
-        self.assertEqual(findISBN("tests/src/test_book.pdf"), '9780521846516')
+        self.assertEqual(findISBN("tests/src/test_book.pdf"), '9782953918731')
 
     def test_findISBN_False(self):
         self.assertFalse(findISBN("tests/src/test.pdf"))
@@ -53,7 +54,7 @@ class TestFetcher(unittest.TestCase):
                          "10.1103/physrevlett.112.253201")
 
     def test_findDOI_DJVU(self):
-        # DOI is incomplete in this text because my djvu file is bad
+        # DOI is incomplete in this test because my djvu file is bad
         self.assertEqual(findDOI("tests/src/test.djvu"),
                          "10.1103/physrevlett.112")