Harold O. Batzer / Robert C. Morris / United States / Forest Service

OCLC:53429568

George P. Markin / Jesse Wayne Brewer / Harold O. Batzer

MINN:31951D02995007R

Biological assay

C. G. Thompson / John Neisess / Harold O. Batzer

MINN:31951D02995188X

Aerial spraying and dusting in agriculture

George P. Markin / Harold O. Batzer / Jesse Wayne Brewer

MINN:31951D02995015S

Aerial spraying and dusting in forestry

Harold O. Batzer / Robert Calder Morris / R. C. Morris

MINN:31951D00279656B

Forest tent caterpillar

Harold O. Batzer

IND:30000091994156

Jack pine budworm

Amos D. Jones / Ellis Brevier Cowling / Harold F. Breimyer / Herbert George Ewan / James William Kimmey / Merton J. Reed / Perry A. Glick / Wayne Ernest Tolle / Lawrence W. Noble / Roald Arnold Peterson / Willis Westlake Wagener

OSU:32435027440734

Agriculture

American Association for the Advancement of Agricultural Teaching. Meeting / Fred Clayton Butler / Frederick William Reynolds / Harry Percy Barrows / Henry Harold Goldberger / J. H. Berkowitz / National Council of Primary Education (U.S.). Meeting / United States. Bureau of Education / United States. Bureau of Education. Division of Statistics / United States. Bureau of Education. Statistical Division / United States. Office of Education / Walter Sylvanus Deffenbaugh / Walton Simon Bittner / Carl Anderson / John Charles Muerman

MSU:31293028403966

Agricultural education

Harold E. Doweiko

UOM:39015055193877

Education

Daniel Porte / Robert S. Sherwin / Alain Baron / Max Ellenberg / Harold Rifkin

0838521789 / 9780838521786

Medical

Harold A. Sarvetnick

UCSD:31822014481915

Polyvinyl chloride

C. G. Thompson / John Neisess / Harold O. Batzer

MINN:31951D02995188X

Aerial spraying and dusting in agriculture

Norton Douglas Addy

UIUC:30112104065948

Forest insects

George P. Markin / Harold O. Batzer / Jesse Wayne Brewer

MINN:31951D02995015S

Aerial spraying and dusting in forestry

Harold O. Batzer / R. C. Morris / United States. Forest Service

OCLC:880116763

Forest tent caterpillar

Harold O. Batzer / Robert Calder Morris / R. C. Morris

MINN:31951D00279656B

Forest tent caterpillar

Harold O. Batzer

IND:30000091994156

Jack pine budworm

Harold O. Batzer

OCLC:67674731

Forest tent caterpillar

Arthur R. Tiedemann / Boyd E. Wickman / Clarence Garrison Thompson / Denis M. Williamson / Donald E. Hilt / Douglas N. Swanston / Francis R. Herman / J. Michael Geist / James O. Howard / James Willis Barrett / Jesse Wayne Brewer / Kenneth W. Seidel / Kent B. Downing / Linda J. Peterson / Marlin E. Plank / Mauro E. Martignoni / Michael J. Sullivan / Paul E. Aho / Richard O. Woodfin / Richard R. Mason / Robert W. Sassaman / Wilbur A. Farr / William R. Meehan / James A. McNutt

OSU:32435066559840

Abies concolor

Harold O. Batzer / Dale O. VanDenburg / Imants Millers

OCLC:981125511

Jack pine budworm

North Central Forest Experiment Station (Saint Paul, Minn.)

OCLC:1084310028

Forest insects

Harold O. Batzer

OCLC:426801404

Trees

George P. Markin / Jesse Wayne Brewer / Harold O. Batzer

MINN:31951D02995007R

Biological assay

Harold O. Batzer

OCLC:769985692

Harold O. Batzer / Daniel T. Jennings

OCLC:951904152

Jack pine budworm

C. G. Thompson / Harold O. Batzer / John Neisess

OCLC:246706489

Arthur R. Tiedemann / C. G. Thompson / D Calvin McCluskey / Donald E. Hilt / Douglas N. Swanston / Kenneth W. Seidel / Kent B. Downing / Marlin E. Plank / Mauro E. Martignoni / Paul E. Aho / Paul H. Lane / Robert W. Sassaman / Wilbur A. Farr / William R. Meehan / Richard O. Woodfin / James Allen McNutt

OCLC:3045437

Aerial fertilizing

Harold O. Batzer

OCLC:62448033

George P. Markin / Harold O. Batzer / Jesse Wayne Brewer

OCLC:1225708427

Douglas fir tussock moth

H. O. Batzer

OCLC:255692754