Harold W. Montzka is a college graduate with majors in math and physical sciences. He taught seven years in secondary public education before becoming self-employed. His book is ba...lihat lebih banyakHarold W. Montzka is a college graduate with majors in math and physical sciences. He taught seven years in secondary public education before becoming self-employed. His book is based on forty years of study. Montzka resides in Columbia Heights, Minnesota.lihat lebih sedikit