Read the call number line by line
E
Read first line in alphabetical order
A, B, BF, BS, C, D, E, F, G, GN, ...L, LA, LB, LC, ... M, ML, MT, N, P, PA, PN, Q, QA, QB, QC, QD, ..., Z
184
Read the second line as a whole number
1, 2, 3, 10, 55, 100, 142, 184, 201, 2000, 2450, 3000, ... 9999
.A1
Read the letter on the third (and possibly fourth) line first, then read the number as a decimal
.A1 = A, then .1
.M45 = M, then .45
1992
Finally, read the year the book was published
1984, 1992, 1997, 2001, 2008,...